Which ordered pair is a solution of the equation 2x − y = 9?
(-4,1)
(-2,5)
(5,1)
(6,-3)
@kelliegirl33

Question

Which ordered pair is a solution of the equation 2x − y = 9?
(-4,1)
(-2,5)
(5,1)
(6,-3)
@kelliegirl33

anonymous · Answer

just a matter of subbing...your points are ALWAYS set up as (x,y)

2x - y = 9

lets try the first answer choice...(-4,1)...x = -4 and y = 1
2(-4) - 1 = 9
-8 - 1 = 9
-9 = 9 (incorrect)
so this is not the one

you want to try the 2nd answer choice ?

anonymous · Answer

(-2,5) is the answer?

anonymous · Answer

it is also easy to check....
(-2,5)

2x - y = 9
2(-2) - 5 = 9
-4 - 5 = 9
-9 = 9 (incorrect)

no...(-2,5) is not the answer

anonymous · Answer

i think it is prob C?

anonymous · Answer

lets check..
2x - y = 9.....(5,1)

2(5) - 1 = 9
10 - 1 = 9
9 = 9 (correct)

BINGO...it is C

anonymous · Answer

Thank you so much for all your help!

anonymous · Answer

anytime :)