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

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

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

4. Vertical line

5. Plug in vertices in objective function

6. Horizontal line

7. Shaded area

8. Substitute AND simplify

9. Slope of 1/1 - through 0

10. Function in mx+b=y form whose graph is a line

11. Opposite - reciprocal slopes

12. No fraction or decimal

13. A=a it is what it is

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

15. Soft - parentheses

16. 'Points' from side to side

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

18. Same slopes

19. [2x+3]=9 - [2x+3]=-9 write it both ways

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

21. 'Points' from BOTTOM to TOP

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

23. A=b - then ac=bc

24. Intersecting points

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

26. Hard - brackets

27. Solid line

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

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

30. x-value because its value is given

31. Solve using every equation (use linear combination)

32. Relations have all points in common e.g same line

33. Set of ordered pairs (input and output)

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

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

36. 1 -2 -3...maybe 0

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

38. Put is simplest form

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

40. No solution

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

42. One or more solutions

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

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

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

46. Shading goes down - or left

47. Dotted line

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

49. e.g x

50. A=b - then b=a