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Algebra Formulas

Subjects : math, algebra
  • Answer 50 questions in 15 minutes.
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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 re-enforces your understanding as you take the test each time.
1. Hard - brackets

2. y-y{2}=m(x-x{2})

3. Undoes operation a+(-a)=0

4. [2x+3]=9 - [2x+3]=-9 write it both ways

5. Change one equation with LCM (i think) and add up - cancelling one variable out

6. Vertical line

7. Solve for (3x-4)(x+5)

8. Function whose graph is a line

9. Shading goes up - or right

10. Relations do not have all points in common e.g diff. lines that may intersect

11. Dotted line

12. 'Points' from BOTTOM to TOP

13. Same slopes

14. Set of all FIRST coordinates of the ordered pairs e.g. x (x -y)(input value - abscissa)

15. mx+b=y

16. 2 or more inequalities combined conjuction (both are true) -9<-4x-5<3

17. A relation in which each element of the domain is paired with one element in the range (no repeated x - however y can repeat)

18. A=b - then ac=bc

19. Plug in vertices in objective function

20. Set of all SECOND coordinates of the ordered pairs e.g. y (x -y)(output value - ordinate)

21. y-value - because its value depends on the x-value

22. No solution

23. A=b - then b=a

24. Original status a+0=a - ax1=a

25. One or more solutions

26. Rectangular array of #s written w/brackets (classified by # of numbers in row and column e.g. 3x3)

27. Correct result - but doesn't work in equation

28. Opposite - reciprocal slopes

29. If IxI>5 then x>5 or x<-5

30. Solve using every equation (use linear combination)

31. Shaded area

32. Change of order a+b+c=a+c+b

33. # set (2 -3) in x+1=y - 2+1=3

34. 1 -2 -3...maybe 0

35. Change of grouping a+(b+c)=(a+b)+c

36. e.g x

37. Set might require positive integers - natural #s - positive reals - etc.

38. Ax+By=C (letters are real - not zero)

39. Set of ordered pairs (input and output)

40. A=b - b=c - then a=c


42. A=a it is what it is

43. Whats worth

44. Put is simplest form

45. Shading goes down - or left

46. x-value because its value is given

47. Substitute AND simplify

48. f(x -y)=x + y

49. Second step to linear combo. Fill in variable for whatever you solved for OR change equation to y= or x=

50. Solid line