Answer:
y⁴ = 2x² + 7 (Not a function)
y = -x + 3 (Function)
y = x² + 1 (Function)
y = 3/4 x - 5 (Function)
y² = x + 10 (Not a function)
Explanations:
Note that:
An equation is a function only if there is only one value of y for a corresponding value of x
For y⁴ = 2x² + 7:
![y\text{ = }\sqrt[4]{2x^2+7}](https://img.qammunity.org/2023/formulas/mathematics/college/9kdchqjooz6ga9oegsgghfr5yttkghqtwo.png)
From the above, we can see that there will be multiple values of y for each vaue of x, therefore, y⁴ = 2x² + 7 is not a function
For y = -x + 3:
This is a linear equation in which each value of x gives a distinct value of y, therefore, it is a function
For y = x² + 1:
This is a quadratic equation in which there are distinct values of y for every value of x. It is a function

This is also a linear equation that has distinct values of y for each value of x. It is a function
For y² = x + 10
![y\text{ = }\sqrt[]{x+10}](https://img.qammunity.org/2023/formulas/mathematics/college/7ysi7awdqlfeti3yy785vdj8mc6r2xow36.png)
This equation has two values of y for each value of x, it is not a function.