8th Math Vocab

4. ________variation, a linear relationship between two variables, x (independent) and y (dependent), that always has a constant unchanged ratio, k, and can be represented by y = kx
10. _________relationship, a relationship with a constant rate of change represented by a graph that forms a straight line
11. ________numbers,the set of positive numbers that begins at one and increases by increments of one each time
13. ________relationship, a relationship with a constant rate of change represented by a graph that forms a straight line
14. Meaning same size, same shape
15. a linear measurement of the distance around the outer edge of a figure
17. a transformation frequently described as a slide of a figure
19. _______figures, shapes whose angles are congruent and side lengths are proportional

1. a linear measurement of the distance around a circle
2. ________sample, a subset of the population selected without bias in order to make inferences about the entire population
3. a transformation frequently described as a flip or a mirror image of the original figure
5. ________numbers, the set of counting (natural) numbers and zero
6. y coordinate of a point at which the relationship crosses the y-axis meaning the x coordinate is equal to zero
7. a transformation frequently described as a turn of a figure around a designated point
8. the original amount borrowed or invested
9. a transformation in which an image is usually enlarged or reduced
12. the set of counting (natural numbers), their opposites, and zero
16. the steepness of a line; rate of change in y (vertical) compared to change in x (horizontal), denoted as m in y = mx + b
18. ________absolute deviation, a measure of variability of data around the mean