Algebra 1 CH4

2. Using the line of best fit to predict values outside the range of known data.
4. The steepness of a line; ratio of rise over run.
6. A type of piecewise function that looks like stairs — it jumps from one value to the next.
7. The differences between actual data points and the line of fit.
9. A regression method used to find the most accurate line of best fit for a data set.
13. A graph that shows individual data points (dots) based on two variables.
15. Using the line of best fit to predict values that are between known data points.
16. A straight line that best shows the general trend of a set of data points on a scatter plot. (4 words)
17. Lines that intersect at 90°; their slopes are negative reciprocals.
18. The fixed amount added to each term in an arithmetic sequence. (2 words)
19. Describes how closely two variables are related in a scatter plot.

1. A function made of different rules for different parts of its graph.
3. Lines with the same slope but different y-intercepts.
5. A linear form equation using slope and a single point.
8. A number sequence where the difference between terms is constant.
10. Means one variable directly causes a change in another.
11. The point where the line crosses the x-axis. (2 words)
12. The point where the line crosses the y-axis. (2 words)
14. A linear form equation using slope and y-intercept.
16. A model line or set of lines that represent a specific problem and solution.