SOLUTION: Are these lines parallel
y=-7x-9
-3y=21x+7
Algebra.Com
Question 1021599: Are these lines parallel
y=-7x-9
-3y=21x+7
Answer by engsaoudah(9) (Show Source): You can put this solution on YOUR website!
y=-7x-9
-3y=21x+7
these two lines are parallel because they have the same gradient when you write the second equation in the form y=MX+C
-3y=21x+7
divide by -3
y=-7x-7/3
m=gradient x=x-axis C=y-intercept y=y-axis
m=-7 in both cases so the lines are parallel.
RELATED QUESTIONS
tell wheather each pair is parallel... (answered by mananth)
Are these 2 lines parallel, perpendicular or neither?
6x+3y=9 and... (answered by scott8148)
Are these lines parallel?... (answered by checkley75)
y=x+ 7
y=x+2
are these lines parallel, perpendicular, or... (answered by nyc_function)
Are these sets of lines parallel, perpendicular, or neither.
3x+y=5
-x+3y=6
(answered by Mathtut)
Are these lines parallel, perpendicular or neither?
y=5x+6... (answered by math-vortex)
Are the graphs of these lines parallel?
y=4x+12... (answered by Fombitz)
Are these lines parallel, perpendicular or neither?
5x+y=7... (answered by nerdybill)
Are these two lines parallel perpendicular or neither? 3x - y = -2 and x - 3y = -9... I... (answered by alicealc)