Evaluate x + 3y, if x = 9 and y = -4.

To solve this you must plug in 9 for x and -4 for y in the equation

X + 3y like so...

9 + 3(-4)

In accordance to the rules of PEMDAS you must multiply first, which will get you...

9 + (-12)

Add these two together and you get:

-3

Hope this helped

~Just a girl in love with Shawn Mendes

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~luis~

it has the same slope and a different y-intercept

hope this : )