Solve the system of equation by graphing if the system has n

Solve the system of equation by graphing, if the system has no solution or infinitely many, so state. (if there is no solution, enter no solution. If there are infinitely many solution, enter infinitely many.) {y = -2 -2x - y = 18 (x, y) = ()

Solution

y = -2 is given and -2x - y = 18 is given
But y=-2 in the equation -2x-y=18
We get:
-2x-(-2) = 18
-2x + 2 = 18
-2x = 18-2=16
x= 16/(-2) = -8
Hence x=-8 and y=-2
Hence the answer to be entered must be (-8,-2)