Determine whether (-4,5) is a solution of 4x + 8y =1 I would like the steps so I can practice this.
The coordinate (-4,5) is an (x,y) coordinate -- so, x = -4 and y = 5.
Plug x and y into the equation 4x + 8y = 1
4(-4) + 8(5) = 11?
-16 + 40 = 11?
24 = 11?
24 does not equal 11, so the coordinate (-4,5) is not a solution of the equation.