Question

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

Answer 1

2x − y = -4

2x + y = -4

2x + y = 4

2x − y = 4

Answer 2

@mathmate

Answer 3

Start by writing the equation in slope intercept form
\[y = mx+b\]
m = slope
b = y-intercept

Answer 4

use the formula for slop
slop=y-y1/x-x1\[m=y-y1/x-x1\]
here given point (0,-4)
so x1=0 and y1=-4 and slop is -2 put these values in equation you will get
-2=y+4/x
-2x-y=4 or 2x+y=-4 so answer is B