Question

susans smartphone plan with stark mobile includes unlimited talk and text and a certain amount of data every month. if she uses additional data, she is charged more on her bill. this graph shows the relationship between the number of additional gigabytes of data susan uses in a month, x, and the total amount (in dollars) of her bill, y. do x and y have a proportional relationship? yes no

Explanation:

Step1: Recall the condition for proportional relationship

A proportional relationship between \(x\) and \(y\) has the form \(y = kx\), and its graph passes through the origin \((0,0)\).

Step2: Check the graph

Looking at the given graph, when \(x = 0\) (no additional gigabytes), \(y=25\) (the bill is \(25\) dollars). So the graph does not pass through the origin.

Answer:

no