Question

Which function equation is the only possible representation of this graph?

Answer 1

We need to find the best function that represents the equation:

Then,

When x=0, the y-value is 0

When x=1, the y-value is 30

when x=2, the y-value is 60

when x=3, the y-value is 90.

Hence, we can say that the function that best represents the graph is y=30x

because it has a rate of change of 30.