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Test your basic knowledge 
SAT and Act Math Formulas
Start Test
Study First
Subjects
:
sat
,
act
,
math
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it reenforces your understanding as you take the test each time.
1. Area of rectangle  square  parallelogram
An ange whose vertex is the center of the circle
(ab)(a²+ab+b²)
A=bh
A=?r2
2. Area of a sector
?d OR 2?r
The distance across the circle through the center of the circle.The diameter is twice the radius.
x°/360 times (?r²)  where x is the degrees in the angle
2Length + 2width [or (length + width) x 2]
3. Perimeter of a rectangle
yy1=m(xx1)
The distance across the circle through the center of the circle.The diameter is twice the radius.
2Length + 2width [or (length + width) x 2]
C =?d
4. Area of Circles
(ab)(a²+ab+b²)
Part of a circle connecting two points on the circle.
A=?r2
Shade upwards or to the right
5. Diameter
The distance across the circle through the center of the circle.The diameter is twice the radius.
A=?r2
Linear functions
2Length + 2width [or (length + width) x 2]
6. Slope
(y2y1)/(x2x1)
Solid line
y=mx+b
(ab)²
7. Perimeter of a square
Shade downwards or to the left
x°/360 times (?r²)  where x is the degrees in the angle
4s (where s = length of a side)
(ab)²
8. tangent ratio
The distance from one point on the circle to another point on the circle.
The distance across the circle through the center of the circle.The diameter is twice the radius.
Opposite ÷ adjacent
A Vshaped graph that points upward of downward
9. Central Angle
The part of a circle that looks like a piece of pie. A sector is bounded by 2 radii and an arc of the circle.
Graphing the system of equations and finding the point at which they intersect
An ange whose vertex is the center of the circle
x°/360 times (2 pi r)  where x is the degrees in the angle
10. A linear function is a function that _____________ a line
Graphs
A segment connecting the center of a circle to any point on the circle
A Vshaped graph that points upward of downward
S²  where s = length of a side
11. a³+b³
Solving systems by adding or subtracting equations to eliminate a variable
Graphs
(a+b)(a²ab+b²)
(a+b)²
12. Radius (Radii)
4s (where s = length of a side)
½(base x height) [or (base x height)÷2]
A segment connecting the center of a circle to any point on the circle
Solving systems by adding or subtracting equations to eliminate a variable
13. Area of a triangle
Ac+ad+bc+bd
When the system of equations have different slopes
C =?d
½(base x height) [or (base x height)÷2]
14. Linear parent function
y=x or f(x)=x
y=mx+b
Linear functions
(ab)(a²+ab+b²)
15. Graphing = or = on a coordinate plane
Solid line
4s (where s = length of a side)
x°/360 times (?r²)  where x is the degrees in the angle
Always
16. Arc
Part of a circle connecting two points on the circle.
Solving systems by adding or subtracting equations to eliminate a variable
S²  where s = length of a side
Linear functions
17. Perimeter (circumference) of a circle
Opposite ÷ adjacent
The distance across the circle through the center of the circle.The diameter is twice the radius.
2 pi r
Ab+ac
18. Zero
Ac+ad+bc+bd
When there is a horizontal line that has different x points  but the same y point
½(b1 +b2) x h [or (b1 +b2) x h÷2]
(ab)(a²+ab+b²)
19. Direct Variation
Any ordered pair in a system that makes all the equations true
(y2y1)/(x2x1)
A=bh
y=kx
20. Inverse Variation
When the system of equations have the same slope and yintercept
A=?r2
y=k/x
The part of a circle that looks like a piece of pie. A sector is bounded by 2 radii and an arc of the circle.
21. Dividing by a negative number in an inequality
A segment connecting the center of a circle to any point on the circle
When the system of equations have the same slope and yintercept
You must flip the sign
(ab)(a²+ab+b²)
22. a³b³
?r²
y=k/x
Shade upwards or to the right
(ab)(a²+ab+b²)
23. Standard form
C =?d
Opposite ÷ hypotenuse
Ax + By=C  where A  B  and C are not decimals or fractions  where A and B are not both zero  and where A is not a negative
S²  where s = length of a side
24. Infinitely many solutions
You must flip the sign
The part of a circle that looks like a piece of pie. A sector is bounded by 2 radii and an arc of the circle.
Ab+ac
When the system of equations have the same slope and yintercept
25. a²2ab+b²
(ab)²
y=x or f(x)=x
yy1=m(xx1)
Ab+ac
26. Absolute value equation
When the system of equations have the same slope and yintercept
½(b1 +b2) x h [or (b1 +b2) x h÷2]
y=mx+b
A Vshaped graph that points upward of downward
27. Circumference of a circle
?d OR 2?r
Shade downwards or to the left
x°/360 times (2 pi r)  where x is the degrees in the angle
C =?d
28. Elimination method
Shade downwards or to the left
y=x or f(x)=x
When the system of equations have the same slope but different yintercepts
Solving systems by adding or subtracting equations to eliminate a variable
29. No solution
The distance from one point on the circle to another point on the circle.
When the system of equations have the same slope but different yintercepts
Always
The part of a circle that looks like a piece of pie. A sector is bounded by 2 radii and an arc of the circle.
30. SlopeIntercept
An ange whose vertex is the center of the circle
Always
y=kx
y=mx+b
31. Area of a circle
?r²
A Vshaped graph that points upward of downward
y=x or f(x)=x
Opposite ÷ adjacent
32. Graphing = or > on a coordinate plane
x°/360 times (?r²)  where x is the degrees in the angle
Ax + By=C  where A  B  and C are not decimals or fractions  where A and B are not both zero  and where A is not a negative
Shade upwards or to the right
Any ordered pair in a system that makes all the equations true
33. A parent function is the simplest ____________ of a function
b±[vb²4ac]/2a
Equation
C =?d
When the system of equations have the same slope but different yintercepts
34. cosine ratio
Adjacent ÷ hypotenuse
A=bh
yy1=m(xx1)
C =?d
35. Circle
Dotted line
When there is a vertical line that has different y points  but the same x point
x°/360 times (2 pi r)  where x is the degrees in the angle
Is the set of points which are all the same distance (its radius) from a certian point( the center).
36. Solution of the system of linear equations
(a+b)²
An ange whose vertex is the center of the circle
Any ordered pair in a system that makes all the equations true
(ab)²
37. Quadratic Formula
Part of a circle connecting two points on the circle.
The distance from one point on the circle to another point on the circle.
b±[vb²4ac]/2a
The part of a circle that looks like a piece of pie. A sector is bounded by 2 radii and an arc of the circle.
38. a²+2ab+b²
Solving systems by adding or subtracting equations to eliminate a variable
Solid line
(a+b)²
When there is a vertical line that has different y points  but the same x point
39. Undefined
½(b1 +b2) x h [or (b1 +b2) x h÷2]
Ac+ad+bc+bd
When there is a vertical line that has different y points  but the same x point
Replacing one variable with an equivalent expression containing the other variable
40. Graphing method
Adjacent ÷ hypotenuse
Linear functions
Ab+ac
Graphing the system of equations and finding the point at which they intersect
41. Substitution method
A Vshaped graph that points upward of downward
Replacing one variable with an equivalent expression containing the other variable
y=kx
x°/360 times (?r²)  where x is the degrees in the angle
42. PointSlope form
When the system of equations have different slopes
x°/360 times (2 pi r)  where x is the degrees in the angle
Shade downwards or to the left
yy1=m(xx1)
43. Sector
y=x or f(x)=x
Linear functions
When the system of equations have the same slope but different yintercepts
The part of a circle that looks like a piece of pie. A sector is bounded by 2 radii and an arc of the circle.
44. A function is ___________ a relation
A=?r2
Shade downwards or to the left
When the system of equations have the same slope but different yintercepts
Always
45. Area of a trapezoid
A=?r2
When the system of equations have the same slope but different yintercepts
Equation
½(b1 +b2) x h [or (b1 +b2) x h÷2]
46. All direct variations are ____________________
A=?r2
Linear functions
Equation
Is the set of points which are all the same distance (its radius) from a certian point( the center).
47. Slope intercept form
Graphing the system of equations and finding the point at which they intersect
Ac+ad+bc+bd
y=mx+b
Opposite ÷ adjacent
48. a(b+c)
An ange whose vertex is the center of the circle
C =?d
Ab+ac
Shade downwards or to the left
49. Area of a square
Shade downwards or to the left
b±[vb²4ac]/2a
(a+b)(a²ab+b²)
S²  where s = length of a side
50. a²b²
S²  where s = length of a side
½(b1 +b2) x h [or (b1 +b2) x h÷2]
When there is a vertical line that has different y points  but the same x point
(ab)(a+b)