Question

Find x - 3y if x = 3 and y = -2.

-9

-3

3

9

Answer 1

What do you get when you plug in the numbers?

Answer 2

IDK I NEED HELP

Answer 3

I'm helping you. Plug in the numbers. If x = 3, 3 goes in place of x.

Answer 4

IS PROBABLY 9 OR 6

Answer 5

Why would you say that?

Answer 6

cause i though it was 3x3 or 3+3

Answer 7

you thought what was?

Answer 8

when you said plug it i though it was 3x3 or 3+3

Answer 9

Noo. x =3, right? And the expression is x - 3y. So it's actually 3 - 3y. So now that you know the first part is 3, plug in y.

Answer 10

how

Answer 11

When an unknown variable (the letter, in this case, y) is next to a number, it's that number multiplied by that letter. So, say, you had 5b, and b was equal to 10. That would mean it's 5 x b, and since b is 10, it's 5 x 10 = 50. So, being that you have 3y, and y is equal to -2, what is 3y?

Answer 12

by plug in, she means replace or substitute