Question

Find the equation of the line that passes through (1,-1) and (-2,8) in point slope form

Answer 1

y = -3x + 2

Explanation:

y2 - y1 / x2 - x1

8 - (-1) / -2 - 1

9/-3

= -3

y = -3x + b

-1 = -3(1) + b

-1 = -3 + b

2 = b