Question

Write an equation of the line in slope-intercept form
(-5,-1) (3,-9)

Answer 1

y = -x - 6

Explanation:

y = mx + b

-1 = -5m + b --> b = 5m - 1

-9 = 3m + b --> b = -3m - 9

5m - 1 = -3m - 9

8m = -8

m = -1

Plug back in the first equation.

-1 = -5(-1) + b

-1 = 5 + b

b = -6