Question

Find an equation of the line passing through the points
(−3,4) and (−7,−5)

Answer 1

y = (9/4)x - 2.75

Explanation:

Find the slope.

`(y_(2)-y_(1) )/(x_(2)-x_(1) )`

(-5 - 4) / (-7 - (-3))

-9/-4 is the slope.

Put into slope intercept form.

y = (9/4)x + b

subtitute y and x to find b (y intercept)

4 = (9/4)(-3) + b

-2.75 = b