Question

A battery is 10% charged and is charging at a constant rate. The graph shows the battery’s charge over time.



What is the slope of the line that represents the situation?



Enter the slope as a fraction.

http://static.k12.com/calms_media/media/1512000_1512500/1512348/1/d544cab76acd5fccf577e44cdae8d094f2ff56f0/MS_IMC-140516-100012.jpg

Answer 1

The slope is rise over run. Now you need to go up on the line until you get to where it intersects the line again (3) and then you go over until you get to the line......it is a whole number :)

Answer 2

slope can be found as rise/run. Rise being the distance of y from one point to another, and run being the distance across the x axis from the same points. So, you only have two points marked (40,40) and (120,100). So, there are two easiest ways to find this.

Count the squares.
Let's start with rise. Start at the (40,40) point and count up (with scale) to (120,100).
Rise = 60.
Do the same across for run.
Run = 80.

So slope = 60/80.

The second method is algebraic.
You know that the 40 and 100 are y value coordinates, which is the same as rise. So simply subtract them for your run. 100 - 40 = 60. Rise = 60.
The 40 and 120 are your x coordinates, or run. 120 - 40 = 80.

Slope = rise/run, 60/80.

Reduce fractions to 3/4.

Answer 3

So it is 3/4

Answer 4

thanks

Answer 5

Do you need anymore help @GirlgoyleH.

Answer 6

yeah sure!

Answer 7

ill tag you in another question

Answer 8

Okay :)