Which two solutions to the equation x2+y2=20 can be used to show that it is not a function? Select two answer choices.

(−2,4)
(2,4)
(4,−2)
(4,2)

c > -10.55

step-by-step explanation:

given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:

8+9z-8=-6-8

since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this

9z = -14

x=25?

i think this is the answer hope this

step-by-step explanation: