If a line crosses the y-axis at (0,-4) and has a slope of -2, what is the equation of the line?

A) 2x-y=-4
B) 2x+y=-4
C) 2x+y=4
D) 2x-y=4

I'm slow at this stuff :( Sorry.
Thanks for the help though. xoxoxo

Question

If a line crosses the y-axis at (0,-4) and has a slope of -2, what is the equation of the line?

A) 2x-y=-4
B) 2x+y=-4
C) 2x+y=4
D) 2x-y=4 

I'm slow at this stuff :( Sorry.
Thanks for the help though. xoxoxo<3
:)

anonymous · Answer

here is a good website to try this on www.mathway.com

ybarrap · Answer

Where does it cross the y-axis? This means, when x=0 y=what? The value of y is the y-intercept, we we usually indicate by b:

y=mx+b

"m" is the slope of the graph -- this was also given

Plug in m and b and then rearrange terms. Tell me what you get.