Question

Which ordered pair is a solution to the system of equations?

x+2y=4 (line a)
-3x+2y=-4 (line b)

A (2,1)
B (-2,-1)
C (-2,1)
D (2,-1)

Answer 1

second question

Answer 2

Try subsitute x=2 in both equations

Answer 3

if the value of y is the same as the option,therefore that is the answer

Answer 4

option A(2,1)=A(x,y)

Answer 5

now try substitute x=2 into both equations

Answer 6

I'm sorry my dad keeps calling me. So A is the answer?

Answer 7

yes :)

Answer 8

thanks

Answer 9

Yw

Answer 10

do you think you can help me with some more?

Answer 11

i will try my best

Answer 12

ok

Answer 13

if you scroll up a little, you will see something named mathproblem.jpg

Answer 14

ok

Answer 15

\[4x-14y=6-First~eqn\]\[2x-7y=-3-second~eqn\]

Answer 16

Step 1:make the coefficient of x the same in both equations

Answer 17

\[4x-14y=6\]\[(2x-7y=-3)\times2\]

Answer 18

\[4x-14y=6\]\[4x-14y=-6\]

Answer 19

step 2:subtract one equation from the other

Answer 20

First eqn-second eqn