SOLUTION: Determine which two equations represent parallel lines. (a) y = 9x – 7 (b) y = –9x + 7 (c) y = 9x + 3 (d) y = -1/9x – 7 I have no idea even how to begin t

Algebra.Com
Question 104032: Determine which two equations represent parallel lines.
(a) y = 9x – 7 (b) y = –9x + 7 (c) y = 9x + 3 (d) y = -1/9x – 7
I have no idea even how to begin to figure this out.

Answer by scott8148(6628)   (Show Source): You can put this solution on YOUR website!
parallel lines have the SAME slope ... the equations are in slope-intercept form

so the two where the x terms have the same coefficient are the ones you want

RELATED QUESTIONS

Determine which two equations represent parallel lines. (a) y = 9x – 7 (b) y = –9x +... (answered by HyperBrain)
Classify the 15 given polynomials as monomials, binomials, trinomials, and polynomials.... (answered by dyakobovitch)
Determine which two equations represent parallel lines. a)y=-9x+4 b)y=9x+4 c)y=1/9x+4 (answered by rapaljer)
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 – 7 (b) y = –9x + 7... (answered by checkley75)
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 – 9 (b) y = –9x + 9 (answered by jim_thompson5910)
Determine which two equations represent parallel lines (a) y = 5/3x + 2 (b) y =-3/5x... (answered by jim_thompson5910)