Answer:
slope m is 0
Step-by-step explanation:
the slope - intercept form is y=mx+b, where m is the slope and b is the y-intercept .
y=mx+b
find the value of m and b using the form y=mx+b.
m=0
b=-4
the slope of the line is the value of m and the y-intercept is the value of b.
slope ;0
y-intercept; (0,-4)