Answer:
the first one
Step-by-step explanation:
use the vertical line test. the horizontal line would intersect at two points.
Not a function fails the vertical line test
This is not a function. The value of x = -1 goes to two different values of y
This would fail the vertical line test
Answer: Algebra acts as a tool to improve communication because much like learning a new language, you have to take baby steps before you can fully get it. This can improve communication because you're learning something new with the help of others.
