Question

The graph below shows the percentage of students enrolled in the College of Engineering at State University. Use the graph to answer the question. Does the graph represent a function? Explain

Answer 1

Yes, it probably would. NOTICE: `color(red)(probably)`.

Explanation:

If something is not a function, it has two points at a certain line. For example, a circle like this:

graph{(x-1)^2+(y-1)^2=9 [-10.45, 14.86, -4.4, 8.26]}

Is not a function because at `x=1`, `y=4 or -2`. However, some line like this:

graph{y=2x-4 [-27.7, 37.25, -14.76, 17.74]}

Is a function because at any `x`-coordinate or any `y`-coordinate, there are no multiple `y` or `x` coordinates.

Yay!