Answer:
YES!
y=x² is a function.
Explanation:
We know that a function is a relation where each input or x-value of the X set has a unique y-value or output of the Y set.
In other words, we can not have duplicated inputs as there should be only 1 output for each input.
Given the equation
y=x²
Here, for every value of x, there is a unique y-value or output.
For example,
when x = 3, y = 9, when x = 6, y = 36
In other words, it does not matter which x value of chose, there will be only output.
Therefore,
YES!
y=x² is a function.