Question

Determine if the function is proportional. Explain your reasoning.

Answer 1

Answer:

The ratio $\frac{\textrm{Rent}}{\textrm{Number of Days}}$ is same for every pair of values.

Step-by-step explanation:

See the given graph.

The graph is a straight line which proves that the Rent in dollars is increasing at a constant rate with respect to time in Days. So, for a fixed change in time in Days, there will be a fixed change in the rent in Dollars.

Therefore, yes the function is proportional  and the ratio $\frac{\textrm{Rent}}{\textrm{Number of Days}}$ is same for every pair of values.  

Hence, option 1 is correct.