Question

What is the y coordinate of the y−intercept of the line that passes through the points
(−4, −1) and (4, 5)

Answer 1

\[y-y _{1}=m(x-x _{1})\]
find m which is the slope
m=3/4
\[y+1=\left( 3/4 \right)(x+4)\]
now solve for y
y=(3/4)x+2
so the coordinate for the y intercept is (0,2)