Answer:
y =-1
Step-by-step explanation:
We are given a point (-2,-1)
Also given that a horizontal line passes through the above point.
We have to find the equation of the horizontal line.
We know that any straight line in xy plane is of the form
y = mx+b where m=slope of line and b = y intercept.
Here given that the line is horizontal and hence the angle it makes with x axis is 0.
Slope of line= m = tan 0 =0
Hence equation of line using point slope form is
y-y1 = m(x-x1) . Here m =0 and (x1,y1) = (-2,-1)
Hence equaiton of line is
y+1 =0(x+2)
Or y =-1
So option A is right answer.
