Question

Which equation in point-slope form represents a line with m =-1/2 that goes through the origin

a. y=1/2x

b. y= -1/2x

C.y+1 = -1/2(x+1)

D. y-1 = -1/2(x-1)

Answer 1

The correct answer is b. y= -1/2x

To find this, we need to take the base form of point-slope form.

y - y1 = m(x - x1)

Now we plug our slope in for m and our point (the origin 0,0) in for x1 and y1.

y - 0 = -1/2(x - 0)

y = -1/2x