Question 178476: which two equations represent parallel lines?
y=-9x+1
y=9x+1
y=1/9x+1
y=-9x+3 Found 2 solutions by Mathtut, cartert:Answer by Mathtut(3670) (Show Source):
You can put this solution on YOUR website! y=-9x+1....eq 1
y=9x+1.....eq 2
y=1/9x+1...eq 3
y=-9x+3....eq 4
:
parallel lines have equal slopes.......these are written in y=mx+b format so the coefficient in from of the x is the slope
:
-9 is equal to -9
:
therefore eq's 1 and 4 are parallel lines
You can put this solution on YOUR website! which two has the same x corridence NOTE: it does not matter if they are both negative or one positive the other negative.
next which two has the same y coordinance?
y = -9x+1
y = 9x+1
these two are parrallel
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