Question

The rate of change in graph one is a positive or negative? in graph B was it’s a positive or negative?

determine the rate of change , be sure to include your units for each answer . Explain work pls and work it out

Answer 1

A) The slope is negative. It is -30

B)The slope is positive. It is 2.5

Explanation:

Graph A:

I selected two points on the graph.

(1, 220) and (7, 40)

The slope is the change in y over the change in x. The y values are 40 and 220. The x values are 7 and 1. You find the change by subtracting.

`(40 - 220)/(7-1)` =
`(-180)/(6)` = -30

Graph B:

This graph is proportional because it is a straight line and it goes through the original. This means that the slope can be found with any ordered pair in the form
`(y)/(x)`. I am going to use the point (2, 5).
`(5)/(2)` = 2.5

Helping in the name of Jesus.