Question

Find the slope of the line containing the points (-9,3) & (6,-12)

Answer 1

Step-by-step explanation

• Calculate the slope with two given coordinate points by using rise over run.

`m = (y_2 - y_1)/(x_2 - x_1)`

Substitute the coordinate points value in the formula.

`m = (3 - ( - 12))/( - 9 - 6) \\ m = (3 + 12)/( - 15) \\ m = (15)/( - 15) \\ m = - 1`

From the slope-intercept form y = mx+b where m = slope and b = y-intercept. Therefore slope = m = -1

Answer

`\large \boxed{m = - 1}`