Question

Which is an equation for the line that contains (1,2) and has a slope of 4

Answer 1

The point-slope form:

`y-y_1=m(x-x_1)`

We have the slope m = 4 and the point (1, 2). Substitute:

`\boxed{y-2=4(x-1)}` use distributive property

`y-2=4x-4` add 2 to both sides

`\boxed{y=4x-2}` - slope-intercept form