I am guessing you want the equation, so here we go.
the equation of a line is:
y = mx + c
To find c, plug in the given
y = 4
x = 7
m = -4
4 = -4(7) + c
4 = - 28 + c
take -28 to the other side
4 = -28 + c
+28 +28
32 = c
equation of this line:
y = -4x + 32
