Across
- 3. A number from -1 to 1 that tells you how good a line of best fit is.
- 4. How we solve a system by canceling out one of the variables.
- 6. 2 or more equations or inequalities in the same problem.
- 9. What it means when we solve an equation to get 5=8.
- 11. Three words that describe slope.
- 12. A type of equation that is mostly variables, like V=lwh.
- 16. A formula for a sequence in the form a(n)=a1+(n-1)d.
- 17. Undoes an operation; used to solve equations.
- 18. Two equations with the same slope are ______.
- 19. The name for the y-values of a function.
- 20. Replacing a variable with a number or expression it's equal to.
- 21. The only way to show the solutions to two inequalities
- 22. The equation 5x-3y=18 is in this form.
Down
- 1. Where a line crosses the y-axis, labeled as b in most equations.
- 2. The name for x-values of a function.
- 5. An equation that is true for every value of the variable.
- 7. Two inequalities connected by 'and' or 'or'.
- 8. A group of elements from the original set.
- 10. Process for using a graphing calculator to make an equation for a line on a scatterplot.
- 13. A type of sequence made by adding the same number to get the next term.
- 14. The slope of an equation for a perpendicular line.
- 15. Using an equation to predict a value oustide of the known range.