Question

Henry keeps track of the number of people inside a music hall to attend a concert by looking at the number of scanned tickets. He plotted the data on the graph below, where x=0x=0 represents the time at 6 p.m., then drew a line of best fit. If we extended the line, what would the value of yy tell us when x=4x=4?

Answer 1

Given that he uses the graph to keep track of the number of people inside the music hall by looking at the number of scanned tickets.

• Where:

x = 0 represents the time 6 pm

If the line is extended, let's determine what the value of y when x = 4 would tell us

Since when x = 0, the time is 6 pm.

When x = 4, the time will be:

6 pm + 4 = 10 pm

The line of best fit is always used for the prediction of data.

Therefore, if the line is extended, the value of y when x = 4 will tell us a prediction of how many people will be in the music hall at 10 o'clock.

ANSWER:

A. A prediction of how many people will be in the music hall at 10 o'clock.