Find the equation of the line
We only need two points
(0, -6) and (4, -7) are on the graph
Slope = m = [ -7 - - 6 ] / [ 4 - 0 ] = [ -7 + 6 ] / 4 = -1/4
We can use either point...I'll use (0, -6) = (x1, y1)
y = (m) * ( x - x1) + y1
y = (-1/4) ( x - 0) - 6
