1. Rational numbers
Can be fractions, decimals, negatives, etc.

2. Irrational numbers
∏ or square roots that come out with decimals that go on and on without a pattern

3. Integers
Negatives or positive whole numbers, but can’t have fractions or decimals

4. Scientific notation
Put calculator in scientific notation and write it x 104 (or whatever exponent it gives you)

5. Slope on a graph
Count rise run

6. Slope on a table
Find two points on the table. Put as ordered pairs. Do y2-y1 x2-x1

7. m
slope

8. b
y-intercept

9. Where a line crosses the y-axis
Y-intercept
Where a line crosses the y-axis

10. Direct variation
y x

11. Constant of proportionality
y x

12. Proportional relationships No add or subtract. Goes through origin.

13. Non-Proportional relationships
Can have add or subtract. Doesn’t go through origin.

14. Solving Equations
Start on the right, do the opposite of x, now on the left, do the opposite of number

15. Where 2 lines cross on a coordinate plane (systems of equations)
Enter in both equations on y= screen. Grpah. 2nd trace 5 enter enter enter

16. The same x with two different y’s is a no, no no!!
Functions
The same x with two different y’s is a no, no no!!

17. Positive correlation

18. Negative correlation

19. No correlation

20. To make prediction on a scatterplot
Draw trend line and trace the number on one axis to the trend line. Then go to other axis.

21. Orientation preserved Directions of shape stays the same

22. Size and shape stays the same
Congruence preserved
Size and shape stays the same

23. Flip Reflection Over x-axis: (x, y)  (x, -y)
Over y-axis: (x, y)  (-x, y)

24. Translation
Slide
(x, y)  (x + a, x + b)

25. Rotation Turn 90o clockwise: (x, y)  (y ,-x)
180o clockwise: (x, y)  (-x, -y)
270o clockwise: (x, y)  (-y , x)

26. Dilation
To change the size of a shape (enlarge or reduce)
(x, y)  (fx ,fy)

27. Same angles. Proportional sides.
Similar figures
Same angles. Proportional sides.

28. Scale factor
Image Pre-image

29. Area of Dilation
Area x scale factor2

30. Perimeter of Dilation
Perimeter x scale factor

31. Missing side of right triangle
Pythagorean Theorem

32. Diagonal
Pythagorean Theorem

33. Shadow problems or map problems
Pythagorean Theorem

34. Same-side interior
Supplementary

35. Alternate exterior
Congruent

36. Vertical Angles
Congruent

37. Alternate interior
Congruent

38. Adjacent
Supplementary

39. Missing angle of a triangle
Add up. Subtract from 180

40. Two remote interior angles of triangle
Add up to equal to exterior angle.

41. Pour, fill, units3
Volume

42. B
Area of base (must use formula)

43. P
Perimeter of base (draw picture of base)

44. Cover, wrap, paint, etc.
Surface Area

45. Total Surface Area
Entire object

46. Only the sides, not the bases
Lateral Surface Area
Only the sides, not the bases

47. Mean Absolute Deviation
Find the mean (average) of a set of data.
Subtract to find difference in each piece of data from the mean you found (no negative answers).
Average this next set of answers.