Answer:
I hope my answer helps :)
Step-by-step explanation:
FUNCTIONS:
x=3
y=-7
y=-x+11
NOT FUNCTION:
y=2[tex]x^{2}[/tex]-6x+4
[tex]y^{2}[/tex]=-5x-12
[tex]x^{2}[/tex]+[tex]y^{2}[/tex]=81
