SOLUTION: Which equation represents a line which is parallel to the line y=-2x-4? a.y−2x=3 b.x−2y=−4 c.x+2y=16 d.2x+y=7

Algebra ->  Points-lines-and-rays -> SOLUTION: Which equation represents a line which is parallel to the line y=-2x-4? a.y−2x=3 b.x−2y=−4 c.x+2y=16 d.2x+y=7       Log On


   



Question 1180913: Which equation represents a line which is parallel to the line y=-2x-4?
a.y−2x=3
b.x−2y=−4
c.x+2y=16
d.2x+y=7

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Which equation represents a line which is parallel to the line y=-2x-4?
this line y=-2x-4 has a slope -2
recall: parallel lines have same+slope, so write all equations in slope intercept form

a.
y%E2%88%922x=3=>y=2x%2B3=>slope is 2=> it's not parallel line to given line
b.
x%E2%88%922y=%E2%88%924=>x%2B4=2y=>y=x%2F2%2B2=>slope is 1%2F2=> it's not parallel line to given line
c.
x%2B2y=16=>2y=-x%2B16=>y=-x%2F2%2B8=>slope is -1%2F2=> it's not parallel line to given line
d.
2x%2By=7=>y=-2x%2B7=>slope is -2=> it IS parallel line to given line

answer: d

+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C-2x-4%2C+-2x%2B7%29+