Answer:
C
Step-by-step explanation:
Https://www.desmos.com/calculator you can use this calculator just plug the what y= in it and it will show you the graph and the vertex
Answer:
D
Step-by-step explanation:
Because if you divide it becomes 3
then to check if its right you just need to multiply 3 and 9 and it becomes 27
Answer:
8xy+4y-z
Step-by-step explanation:
Add values with the same variables; in this case xy