Question

The graph below shows the total cost of an internet subscription, C, as it relates to the number of internet hours used, h.

https://lcboe.owschools.com/media/o_anageo_ccss_2015/8/img_alg1u03l06_13.gif

How much does the company charge per hour?

Answer 1

slope

Answer 2

OK so TBH i'm trying to complete my math course in just one day. I am learning this super fast. How do I calculate with slope to get the answer?

Answer 3

\(\sf slope = \dfrac{difference~in~y}{difference~in
~x} \)

Find two points on the graph that are easy to read.
Subtract the y-coordinates of the two points.
Subtract the x-coordinates of the two points in the same order.
Divide the first difference by the second difference.
That is the slope.

Answer 4

Example:

Point A: (3, 8)
Point B: (7, 12)
Difference in y: 12 - 8 = 4
Difference in x (in the same order): 7 - 3 = 4
\(slope = \dfrac{4}{4} = 1\)

Answer 5

But the graph i uploaded has no points?

Answer 6

Yes, it has. You have a scale along the x-axis, and a scale along the y-axis.
Choose any two points on the blue line that are on grid intersections and are easy to read.

Answer 7

So 27 minus 13? Would the answer be $14 an hour then?

Answer 8

Where did you get 27 and 13?

Answer 9

Each grid space in x is 1 units.
Each grid space in y is 5 units.

Answer 10

the line starts at 27 and ends at 13