Question

Does (9, 0) make the equation y = x + –9 true?

Answer 1

No it doesn't

Explanation:

Because substituting Y=9 and x=0 into the equation it won't give the correct answer:

9=0-9

9=-9

this shows that they are not equal

Answer 2

yes it does

Explanation:

if y =0,

x=9

if x =0,

y=-9

therefore it makes the equation true.