Answer:
The third choice
Step-by-step explanation:
a relation is a function if an input has at most one output for a given input
Choices 1, 2 and 4 are not functions as they have two different outputs for the same input. (See the red ovals)
Answer is (4,7)
Step-by-step explanation:
they are integers... was there a grammar error
Answer:
I think its
-43
Step-by-step explanation:
(4)(−9)−7
=−43