Intercepts are when one value is 0...like when x is 0, the point would be the y intercept....
x intercept is 4
y intercept is 5
slope: y2 - y1/x2 - x1
slope = 0 - 5/4 - 0
slope = -5/4
the for the equation plug in any points from the line.
y = mx + b
5 = -5/4(0) + b
5 = B
y = -5/4x + 5 is the equationh to the line