Question

What is the equation of the line that passes through the point 4, 8 and has a slope of 4

Answer 1

The equation is: y = 4x - 8

Explanation:

Use the point (4, 8) and the slope of 4 with the point slope form:

y - y1 = m(x - x1)

y - 8 = 4(x - 4)

y - 8 = 4x - 16

y = 4x - 8

Proof:

f(4) = 4(4) - 8

= 16 - 8

= 8, giving the point (4, 8)