Pls. Help 10 points help me pls anyone?

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)