Question

Write the equation of the line that has slope of -2 and goes through the point (1, -2). Write your final answer in slope-intercept form.

Answer 1

y = -2x

Explanation:

Use point slope form: (y - y1) = m(x - x1)

Step 1: Plug in

(y - (-2)) = -2(x - 1)

y + 2 = -2(x - 1)

Step 2: Distribute

y + 2 = -2(x - 1)

y + 2 = -2x + 1

Step 3: Subtract 2 from both sides

y + 2 - 2 = -2x + 2 - 2

y = -2x

Answer: y = -2x