Question

Use the substitution method to solve the following system of equations.

3x+5y=3
x+2y=0

Answer 1

solve the second equation for x

Answer 2

x=-2y

Answer 3

then 3x-5(-2y)=3

Answer 4

isnt it

3(-2y)-5y=3?

Answer 5

oh yeah it is

Answer 6

-6y-5y=3
-11y=3
---- ---
-11 -11
y=3/-11

Answer 7

But my choices are

(6,1)
(1,-3)
(6,-3)
(1,1)

Answer 8

it is (6,-3)

Answer 9

if you dont mind my asking, why?

Answer 10

okay,;

3(-2y)+5y=3

-6y+5y=3

-1y=3

y=-3

Answer 11

i see! Thank you