slope (rate): how much y changes as x-increases by 1

y-intercept: the y-value when x = 0$\displaystyle x = 0$

 x -1 0 1 2 3 4 y -1 1 3 5 7 9

1 Compute the slope:

2 Compute the y-intercept:

3 What strategies did you use to compute the slope and y-intercept?

The slope and y-intercept in this table are harder to find, because the x-values don’t go up by 1 and we can’t see a value for x = 0$\displaystyle x = 0$. Try filling in the points that have been skipped to Compute the slope and y-intercept.

 x 2 5 8 11 y 3 9 15 21

4 Compute the slope: 2

5 Compute the y-intercept:

The slope and y-intercept in this table are even harder to find, because the x-values are out of order!

Calculate the slope and y-intercept from any two points! Be sure to show your work.

 x 3 20 5 9 1 y 5 56 11 23 -1

6 Compute the slope:

7 Compute the y-intercept:

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