Johnny wants to find the equation of a circle with center (3,-4) and a radius of 7. He uses the argument shown. There are three highlights in the argument to show missing words or phrases. For each highlight, click on the word or
phrase that correctly fills in the blank.
Johnny's Argument
Let (x, y) be any point on the circle. Then, the horizontal distance from (x, y) to the center is ?
The vertical distance from (x, y) to the center is ? The total distance from (x, y) to the center is
the radius of the circle, 7. The
can now be used to create an equation that shows the relationship
between the horizontal, vertical, and total distance of (x, y) to the center of the circle.