Question

A line with a slope of 4 passes through the point 2,1 what is the equation y=mx+b

Answer 1

The point-slope form:

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

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

`y-1=4(x-2)` use distributive property

`y-1=(4)(x)+(4)(-2)`

`y-1=4x-8` add 1 to both sides

`\boxed{y=4x-7}`