Question

A line has a slope of 4 and lies on the point (2, 4). What is the equation of that line in slope-intercept form?

Answer 1

`y = 4x-4`

Explanation:

You are given the slope, `m` and a point, `(x,y)`. Substitute these values into the following formula:

`y-y_1 = m(x-x_1)" larr m = 4 and (2,4)`

`y-4 = 4(x-2)" "larr` multiply out and re-arrange

`y" "= 4x-8+4`

`" "y = 4x-4`