Answer:
y = a*x + b
a is the slope and b is the y-intercept (at x=0)
is the general formula.
let's plug in the x and y information of the point, and slope.
3 = 1/4 * 8 + b
that seems like we can solve for b
3 = 2 + b
1 = b
the y-intercept is at (0,1)
