Question

If a line has a slope of -2 and goes through the point (1, -3), then the equation for the line in slope-intercept form is what?

Answer 1

y = -2x - 1

Explanation:

Plug in the slope and given point into slope intercept form, y = mx + b, and solve for b:

y = mx + b

-3 = -2(1) + b

-3 = -2 + b

-1 = b

Plug in the slope and y intercept into y = mx + b:

y = mx + b

y = -2x - 1

So, the equation of the line is y = -2x - 1