URGENT PLEASE HELP BEEN ON THIS TEST FOR 3 HOURS NOW Look at the image attached for the question and answer

(b)

Step-by-step explanation:

Here OPQR is the cyclic quadrilateral because it is inscribed in a circle

The sum of the opposite angles of a cyclic quadrilateral is i.e supplementary

So, and  are supplementary

Part A: What is the rate of change and initial value of the function represented by the graph, and what do they represent in this scenario?

First, calculate the rate of change (Slope, once it is a linear function):

I will take the points: and

Let's understand the graph!

This linear graph is about songs being downloaded in a period of 5 weeks.

In the beginning, we have 100 songs to be downloaded. As the weeks past, the number of songs remaining decreases, that's why the graph's slope is negative. In week 5, all songs were downloaded.

The initial value (100) represents the number of songs.    

Part B: Write an equation in slope-intercept form to model the relationship between x and y.

The Slope-intercept form of linear equations is

where, m is the slope and b is the y-intercept.

In this case, we have