Question

Select the equation that contains the points (-1, -8) and (3, 4).
a. y-4=-2(x-3)
b. y+8=-2(x+1)
c. y+4=3(x+3)
d. y-4=3(x-3)

Answer 1

First find the slope.

\(\sf\Large Slope = \frac{\color{blue}{y_2}-\color{red}{y_1}}{\color{green}{x_2}-\color{purple}{x_1}}\)

Where the two points are in the form:

\(\sf\Large (\color{purple}{x_1},\color{red}{y_1})~and~(\color{green}{x_2},\color{blue}{y_2})\)

Answer 2

can you find the slope between (-1, -8) and (3, 4)?

Answer 3

Once you find the slope m, recall the point-slope formula:
$$\Huge y-y_0=m(x-x_0)$$