Find an equation of the line having the given slope and the given point.

m=0 (o,-4)

would it be y=-4?

To find the equation of a line given the slope and a point, you need to use the point-slope form of the equation. The point-slope form is given by:

y - y1 = m(x - x1)

Where m is the slope, and (x1, y1) is the given point.

In this case, the slope is 0 and the given point is (0, -4).

Plugging these values into the point-slope form, we get:

y - (-4) = 0(x - 0)

Simplifying:

y + 4 = 0

Therefore, the equation of the line with a slope of 0 and passing through the point (0, -4) is y + 4 = 0.