SOLUTION: My QUEStiON iS iN My ALGEBRA BOOk. it REAdS: dEtERMiNE WhEthER tHE EqUAtiONs ARE PARALLEL LiNEs. PROBLEM: 1] x+4=y y-x=-3 i dONt UNdERStANd HOW tO SOLVE tHiS PRObLEM. C

Question 175127This question is from textbook algebra 1
: My QUEStiON iS iN My ALGEBRA BOOk. it REAdS: dEtERMiNE WhEthER tHE EqUAtiONs ARE PARALLEL LiNEs.
PROBLEM:
1] x+4=y
y-x=-3
i dONt UNdERStANd HOW tO SOLVE tHiS PRObLEM.
CAN yOu HELP ME? This question is from textbook algebra 1

Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
first write them in slope intercept form so you can see the slope y=mx+b where m is the slope.
:
y=x+4 is already in the right form
:
y=x-3--->we just added an x to both sides.
:
now we can see that the slope is 1 for each equation meaning they have the same slope therefore they are parallel lines.
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