Question

Select the ordered pair from the choices below that is a solution to the following system of equations:
-3y − 4x = 21
4x − y = 7
Answer

(0, -7)

(0, 10)

(-6, 1)

(7/3, -7)
@studentc14

Answer 1

To find the answer to this question is very simple! If you don't want to/don't know how to solve each equation, start by plugging in each value.
First try the ordered pair (0,-7)
0 is the x value so plug in for x
-7 is the y value so plug in for y
Understand this?

Answer 2

yea

Answer 3

@studentc14

Answer 4

what is yhe answer @studentc14

Answer 5

Well, I'm not simply going to give you the answer. Did you plug in (0, -7) into the two equations?

Answer 6

idk how to do that

Answer 7

I just told you. for -3y-4x=21, plug in the values to get -3(0)-4(-7)=21 and simply solve. Then solve 4(0)-(-7)=7.

Answer 8

Do you understand what I'm saying?

Answer 9

u speak spanish?

Answer 10

yes, un poco... porque