SOLUTION: which two equations represent parallel lines? y=-9x+1 y=9x+1 y=1/9x+1 y=-9x+3

Algebra.Com
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

Answer by cartert(27)   (Show Source): 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

RELATED QUESTIONS

Determine which two equations represent perpendicular lines. a. y= 9x-3 b. y= 1/9x+3 (answered by checkley75)
Determine which two equations represent parallel lines. a)y=-9x+4 b)y=9x+4 c)y=1/9x+4 (answered by rapaljer)
Which two equations represent parallel lines?? a. y = 9x + 6 b. y = 4/9x + 1 c. y =... (answered by user_dude2008)
Determine which two equations represent parallel lines: (a)y=-9x+4 (b)y=9x+4... (answered by tutorcecilia)
DETERMINE WHICH 2 EQUATIONS REPRESENT PERPENDICULAR LINES. A)Y=9X-3 B)Y=1/9X+3... (answered by checkley71,stanbon,ilana)
Determine which two equations represent parallel lines. (a) y = 9x – 7 (b) y =... (answered by scott8148)
which two equations represent parallel lines y=2/3x+2 y=- 3/2x -5 y=9x+7... (answered by checkley71,mathobsess)
I am supposed to determine which two equations represent parallel lines: (a) y=-9x+4... (answered by Earlsdon)
Determine which two equations represent parallel lines. (a) y = 9x – 7 (b) y = –9x +... (answered by HyperBrain)