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Mathematics 18 Online
OpenStudy (anonymous):

Which ordered pair is not a solution of y = –4x – 9 ? (1 point) • (–9, 27) • (3, –21) • (–6, 15) • (5, –28)

OpenStudy (dtan5457):

y=-4x-9 Plug each x value in, and see if the correct y output comes out.

OpenStudy (anonymous):

? how

pooja195 (pooja195):

well.... (x,y)

pooja195 (pooja195):

so just take the X coordinate and plug it in place of X same with Y

OpenStudy (anonymous):

what does that mmean

pooja195 (pooja195):

\[27= –4(-9) – 9 \] if you solve this does it equal 27?

pooja195 (pooja195):

whats 4 times -9?

OpenStudy (anonymous):

-36

pooja195 (pooja195):

now subtract 9

OpenStudy (anonymous):

-45

OpenStudy (phi):

be careful you want to do -4 * -9

pooja195 (pooja195):

>_< right a negative times a negative = positive try again

OpenStudy (anonymous):

so it A

pooja195 (pooja195):

it says which is NOT a solution

OpenStudy (anonymous):

oh

pooja195 (pooja195):

so A is not correct \[-21 = –4(3) – 9 \]

pooja195 (pooja195):

\[4\times3=? \]

OpenStudy (anonymous):

so B

pooja195 (pooja195):

yep :)

OpenStudy (anonymous):

thanks!!!!

pooja195 (pooja195):

welcome :)

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