SOLUTION: Graph the linear system and estimate the solution. Then check solution algebraically. y= -3x - 13 -x - 2y = -4 y= -3x - 13 (already in slope intercept form) -x - 2y = -

Algebra ->  Rational-functions -> SOLUTION: Graph the linear system and estimate the solution. Then check solution algebraically. y= -3x - 13 -x - 2y = -4 y= -3x - 13 (already in slope intercept form) -x - 2y = -      Log On


   

Question 354667: Graph the linear system and estimate the solution. Then check solution algebraically.
y= -3x - 13
-x - 2y = -4

y= -3x - 13 (already in slope intercept form)
-x - 2y = -4 .... y= -2x + 2 (slope intercept form?)
I graphed them and they met at (3, -4)
I checked my solution and it didn't match up.
What did I do wrong?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
y= -3x - 13
-x - 2y = -4
y= -3x - 13 (already in slope intercept form) Yes it is!
.
-x - 2y = -4 ***
multiplying thru with (-1)
2y + x = 4
.
y+=+%28-1%2F2%29x+%2B+2
.
(-6,5) is the solution

+graph%28+300%2C+300%2C-16%2C16%2C-16%2C16%2C-3x+-+13%2C+%28-1%2F2%29x+%2B+2%29+