Question

Solve this system of equations.

x+2y=4
2x+y=10

Answer 1

take one of the equations and solve for either y or x

Answer 2

then use that to substitute in for the other equation

Answer 3

i got (6, -2) . is that right ?

Answer 4

hold on let me check since i haven't done the calculation

Answer 5

k

Answer 6

check to see whether the (x,y) you got satisfies both equations (by subbing them into both and making sure that the LHS equals the RHS). If so, then yes you are right.

Answer 7

or you can do that lol

Answer 8

(6,-2)
So does:
x+2y=4 ---> (6) +(2)(-2) = 4 ? no.

2x+y=10 ---> (2)(6) + (-2) = 10 ? yes

Somethings wrong.

Answer 9

hmmmm.

Answer 10

im confused.

Answer 11

\[x+2y=4\to x= 4-2y\]
\[2x+y=10 \\ 2(4-2y) +y =10\\ 8-4y+y=10\\-3y=2\\y=-\frac{2}{3}\]
Can you find x from here?

Answer 12

yes,