The answer should be A, if he marked it up 70% just multiply 66 by 1.7 for your answer.
Answer: This relation is not a function
Step-by-step explanation:
To find out if a relation is a function, we need to use the vertical line test, which means each input value only has one output value. This graph does not pass that vertical line test.
3/4 is as simple as it gets 5/10- 1/2
