Question

Coffee cost $18.96 for 3 pounds was the cost of per pound of coffee let X be the number of pounds of coffee if I buy the total of the cost of expound draw a graph of the proportional relationship between the number of pounds of coffee and the total cost of you can use technology to do this work where can you see the cost per pound of coffee in the graph what is it

Answer 1

x= 1 pound of coffee
3x=$18.96
divide both sides by 3
x= $6.32
for every pound of coffee you buy, it costs $6.32
here is a graph where it is mirror flipped due to my camera
it is linear and grows at a constant rate

Answer 2

We know that 3 pounds of coffee cost $18.96. We can use the rule of three to find the cost per pound

`x=1lb(\$18.96)/(3lb)=\$ 6.32`

This means that one pound of coffee costs $6.32.

Having this ratio of change, we can express a linear function that models this problem

`y=6.32x`

The image attached shows the relationship between these two variables, which has a linear behaviour.

Where
`y` represents cost in dollars, and
`x` represents pounds.