Answer:
x2 + y2 = r2, and this is the equation of a circle of radius r whose center is the origin O(0, 0). The equation of a circle of radius r and center the origin is x2 + y2 = r2.
I think this is the answer.
Line AB is Perpendicular to line CD
Line AB Parallel to line EF
5
Step-by-step explanation:
The function of a straight line is given by y=mx+c
Where m - gradient/slope
C- y intercept
