Question

Y = –3x + 6

y = 9
What is the solution to the system of equations?

(–21, 9)
(9, –21)
(–1, 9)
(9, –1)

Answer 1

The above answer is correct! The answer is C--> (-1,9).

Explanation:

This is right on edg2020!

Answer 2

It is given that y=9, this narrows down our answer choices.
(x,9)

B and D can't be the answers due to the fact the y-coordinate isn't 9.

Let's try A.
Plug in 9 for y then solve for x:
9 = –3x + 6
Subtract 6 on both sides to get:
3=-3x

x=-1

A is not the answer.

That leaves us with C and C is the answer because x=-1 and y=9

Final answer: C (-1,9)