Question

Which point is a solution of y = 3x and x + 2y = –21?
Select one:
a. (–3, –9)
b. (–9, –3)
c. (3, –9)
d. (–3, 9)

Answer 1

Will give medal

Answer 2

b or a I think...
I don't know

Answer 3

It is a

Answer 4

I think......

Answer 5

first you must solve for y for the second equation.

afterwards make both equations equal to each other and solve for x.

then just plug x in and get your coordinate

Answer 6

@BioEpic

Answer 7

A
substitue the values -9=3(-3)
-3+2(-9)
-3-18=-21

Answer 8

try solving by options