Question

Please Help!

Answer 1

The rate of change is equal to (y2-y1)/(x2-x1) where (x1,y1)=((0,150) and (x2,y2)=(5,0). Therefore the rate of change equals (0-150)/((5-0)=-30 songs/week. This is equal to the slope of the line that goes through these two points. The initial value is the y coordinate of the point when x=0 which is 150. The equation of the line is y=-30x+150, and this is the slope-intercept form (y=my+b) where m is the slope of the line and b is the y-intercept.

Answer 2

Answer:

$y = -30x+150$ is the equation in slope intercept form

Rate of change = -30

Intial valu =150

Step-by-step explanation:

Given that Ivy has borrowed 150 songs from her friend. She plans to download an equal number of songs on her music player each week for 5 weeks.

Initially there will be 150 songs left, next week 120 songs, and so on.

Thus there is a decrease of 30 songs every week.

Hence slope = -30

y intercept = 150 (initial songs left)

So equation of line would be

$y = -30x+150$