Answer:
C
Step-by-step explanation:
A function means that a graph cannot have repeating x values, so to test if something is a function we do the horizontal line test. You simply draw a vertical line and if the graph touches it twice it is not a function.
See below for pics of the answers
(-1,4)(1,4)
2
A: She lined up the protractor incorrectly.
Hope it helps:)
