write an equation for each line

1.) through (4, -1) with m=-3

2.) parallel to y=4 with x-intercept (-3, 0)

Question

write an equation for each line

1.) through (4, -1) with m=-3

2.) parallel to y=4 with x-intercept (-3, 0)

anonymous · Answer

1) line equation y=mx+b, m=-3

y=-3*x+b
-1=-3*4+b
-1=-12+b
b=11
y=-3x+11

anonymous · Answer

Well given that the slope is -3. You have -3x + B = Y. Plug in x = 4 and y = -1. -3(4) + B = -1. Solve for B. Done with the first one.

Second one is quite similar, except you have the same slope.

anonymous · Answer

Or you can just use the point-slope formula.

anonymous · Answer

2), someone correct me if im wrong here, but to be parallel to y=4 means the slope is 0.  thus, to touch (-3,0), you must have an equation y=0

anonymous · Answer

which is the x axis so the intercept data is irrelevant...