Question

What is the equation of the line that passes through the point (-2,-2) and has a
slope of 2?

Answer 1

y = 2x + 2

Explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = 2, thus

y = 2x + c ← is the partial equation

To find c substitute (- 2, - 2) into the partial equation

- 2 = - 4 + c ⇒ c = - 2 + 4 = 2

y = 2x + 2 ← equation of line