Question

Write the equation of the line in slope intercept form that passed through (1, 4) and (3, 18)

Answer 1

y=7x+11

Explanation:

to find the slope we need to do
`(18-4)/(3-1)` which is
`(14)/(2)` or 7.

then, we put this into point slope form (y-y1)=m(x-x1).

y-4=7(1)

we make the x value 0 in order to find the y-intercept.

y=11 since we multiply 7 by 1 to get 7, and add 4 onto both sides.

then we put the slope and the y-intercept into slope intercept form and get y=7x+11.