Answer:
A
Step-by-step explanation:
ewqrui
Answer:
60
Step-by-step explanation:
2/3*d=40
d=40*3/2
d=60
Answer:
and
.
Step-by-step explanation:
To this relation be a function, the horizontal coordinates can't be equal. So, let's find the value of
that makes those coordinates equal.

Using the null factor property, we have

Therefore, the given relation is not a function when
and
.