The data in the table compares x, the number of pages in a chapter, to y, the amount of time, in minutes, spent reading. The function y = 0.86x – 0.09 models the data in the table
Which is the best prediction for the number of pages in a chapter that takes 18 minutes to read?
15
17
19
21

Respuesta :

21
18=0.86x - 0.09     Put 18 as the y value and solve for x
18.09=0.86x           Add 0.09 on both sides.
21.03=x                  Then divide on both sides by 086

Using the equation that models the function, the best prediction is: 15 pages.

What is a Linear Function?

A linear function is defined using the equation, y = mx + b, where m is the unit rate and b is the initial value.

Given the equation for the function as, y = 0.86x - 0.09, substitute x = 18 into the equation to find the number of pages in a chapter it will take 18 minutes to read.

y = 0.86(18) - 0.09

y = 15.39 ≈ 15.

Therefore, using the equation that models the function, the best prediction is: 15 pages.

Learn more about linear function on:

https://brainly.com/question/15602982