PLEASE HELP! Urgent I'll give brainliest if answer is right tysm.
2 answers:
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The equation of a circle:
(h, k) - center
r - radius
We have the points A(-1, 7) and B(7, 7). AB is a diameter of a circle.
The midpoint of diameter is a center of a circle.
Calculate this using:
Substitute
Therefore we have h = 3 and k = 7.
Calculate a length of a radius using:
Substitute coordinates of the points (3, 7) and (7, 7):
Your answer is:
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You can read the coordinates of the center and length of a radius from a graph.
Look at the picture.
