- #1

nukeman

- 655

- 0

## Homework Statement

Ok, I think i got it, but can you all tell me if these are the right/proper steps I must do?

Determine the point of intersection of the following pair of lines:

3x - 7y = 8

2x + 4y = -12

Now, first step is the use the 2nd equation and turn the 2nd equation into:

2x = -12 - 4y

x = -6 - 2y

THEN...subsitute the above date into the 1st equation)

3(-6 - 2y) - 7y = 8

turns into

-18 - 6y - 7y = 8 (just 3 x - 6 and 3 x -2y)

****now I go -6 + -7 = -13y and -18 - 8 = 26

so that then turns into:

-13y = 26

then

y = -2

Correct so far?

NOw for x, we go x = -6-2 (-2) = -2?

so x and y are both -2?

Are those the right steps? is there a better way? Am i correct?