What is the equation in point slope form of the line that passes through the point (1, −2) and has a slope of 3?

Answer 1

y = mx + b

y = 3x + b

Substitute:

-2 = 3(1) + b

-2 = 3 + b

b = -5

y = 3x -5

Let x = 0, then y = -5

Now, we have two points: (0, -5) and (1, -2)

m = (y2 - y1)/(x2 - x1)

(x2 - x1) m = (y2 - y1)

(1 - 0) 3 = (-2 - -5)