Answer:

Step-by-step explanation:
A suitable common denominator is 4k^2. (This eliminates the first and last choices.)

A vertical angles and Angles 1 & 3
<em>Answer:</em>
A: represents a function
<em>Explanation:</em>
Every other option, A, has two y for one x.
It can be a function if there is 1x for 1y.
<em>If this was helpful, please mark brainliest. Have a beautiful day!</em>
Answer:
number 4 i gess
Step-by-step explanation: