Write down the gradient of the line y =-4r+7.

4
x
+
y
=
7
or
y
=
−
4
x
+
7
Comparing withe general equation of a straight line
y
=
m
x
+
c
we get slope
m
=
−
4
.
Putting x=0 in the equation we get
y
=
7
. So y-intercept is
y
=
7
graph{4x+y=7 [-20, 20, -10, 10]} [Ans]