Question

mackenzie keeps track of the number of people inside a music hall to attend a concert by looking at the number of scanned tickets. she plotted the data on the graph below, where ( x = 0 ) represents the time at 6 p.m., then drew a line of best fit. what does the point ( (1.25,142) ) represent?

Explanation:

In a coordinate - point \((x,y)\), \(x\) represents the independent variable and \(y\) represents the dependent variable. Here, \(x\) is the time (with \(x = 0\) corresponding to 6 p.m.) and \(y\) is the number of people inside the music hall.

The \(x\) - value \(1.25\) can be converted to time. Since \(x\) is in hours (because of the context of time passing from 6 p.m.), \(0.25\) of an hour is \(0.25\times60=15\) minutes. So \(x = 1.25\) means \(1\) hour and \(15\) minutes after 6 p.m., which is 7:15 p.m. The \(y\) - value \(142\) represents the number of people.

Answer:

At 7:15 p.m. (1.25 hours after 6 p.m.), there are 142 people inside the music hall.