Sur it's a function because for each x value corresponds one and only one y value.
Another easy way to determine if y is a function is to apply the vertical test:
If you draw a vertical line and this lines intersects the graph in one point, then y is a function
Answer:
1/2 = m
Step-by-step explanation:
3/4=m+1/4
Subtract 1/4 from each side
3/4 - 1/4=m+1/4-1/4
2/4 = m
Simplify
1/2 = m
Answer:
C
Step-by-step explanation:
Given
4x² = 64 ( divide both sides by 4 )
x² = 16 ( take the square root of both sides )
x = ±
= ± 4
Solutions are x = - 4 and x = 4 → C
<h2>
Hello!</h2>
The answer is:
C. 
<h2>
Why?</h2>
The density is the relation between the mass and the volume of an object. We are given four options to chose, and we can find the correct one by doing the following calculations:

So, the correct options is C. 
Have a nice day!