Question

what is the x-coordinate of the solution of system of equations? 2x-y=6
y=-3x+19

Answer 1

rearrange the equation of 2x-y=6 into terms of y first.

Answer 2

so y=-2x+6?

Answer 3

y=2x+6

Answer 4

2x-y=6 (bring the y to the right hand side so + y on both sides) and also (bring the six to the left hand side by -6 on both sides)
2x-6=y
y=2x-6

Answer 5

ok

Answer 6

now, solve both equations

Answer 7

1) y=2x-6
2) y=-3x+19

Answer 8

tell me what you get for the x value afterwards.

Answer 9

how though?

Answer 10

do you know how to solve for both equations?

Answer 11

no

Answer 12

okok, let me explain sonja, it's sonja right?

Answer 13

yes

Answer 14

1) y=2x-6
2) y=-3x+19

we want to find the x value and to do this we have to get rid of the y value. Since we rearranged the first equation already in terms of y, we can directly solve for x now.