dannaDevieRaww dannaDevieRaww

19-05-2016
Mathematics

Answered

What is the value of y so that the ordered pair (5, y) is a solution to the equation –5x + y = –40?

A.

–65

B.

9

C.

–15

D.

7

Verified Answer :

19-05-2016

\(-5x + y = -40\\\\x=5\\\\-5(5)+y=-40\\-25+y=-40\\y-25 = -40\\y -25+ 25 = -40+25\\y = -40+25\\\\\boxed{\bf{y=-15}}\)

Answer is C.

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