Question

The graph below represents the price of sending text messages using the services of a phone company. What is the constant of proportionality?

A graph is shown. The values on the x axis are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. The values on the y axis are 0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80. Points are shown on ordered pairs 0, 0 and 2, 16 and 4, 32 and 6, 48 and 8, 64. These points are connected by a line. The label on the x axis is Text Messages Sent. The label on the y axis is Price in cents.

8
14
16
48

Answer 1

hey drag the graph into the chat box so we can see it

Answer 2

Ok

Answer 3

in this case, constant of proportionaliy is the same as the slope of the graph (k) since y = kx

Answer 4

16

Answer 5

Are you sure?

Answer 6

previous answer is incorrect

what is the slope of the graph?

Answer 7

16+16=32

Answer 8

previous answer is also incorrect...

what is the slope of the graph?

(y2-y1)/(x2-x1) = ?

Answer 9

k @AQ99

Answer 10

(32-16)/(4-2)

Answer 11

^ excellent! so, what does that simplify to?

Answer 12

idk (got no calculator 16/2=8

Answer 13

yup! 8 is the slope, and 8 is the constant of proportionality ~ we're done

Answer 14

wait someone need a meadel (couf couf)