AMC 8 Daily Practice Round 9

Complete problem set with solutions and individual problem pages

Problem 7 Easy

Emily's teacher asks her to plot all the ordered pairs (r, s) of positive integers, where r represents the radius of a circle and s represents the area of the same circle. What should her graph look like?

  • A.

  • B.

  • C.

  • D.

  • E.

Answer:D

S=\pi r^2

r and s present a quadratic function relationship.

The answer is \text{D}.

Related Problems
Problem 5 AMC 8 Daily Practice Round 9
Problem 6 AMC 8 Daily Practice Round 9
Problem 8 AMC 8 Daily Practice Round 9
Problem 9 AMC 8 Daily Practice Round 9
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