Timothy bought 10 cookies for $5.00. let x represent the number of cookies purchased, and let y represent the total cost. graph the line that represents the proportional relationship.

The line that represents the proportional relationship is . Check the graph in the picture.

We know that x represent the number of cookies purchased and y represent the total cost, so the unit cost of the cookies, which is the slop of the line, will be given by

where

is the slope of the line

is the total cost

is the number of cookies

We know that Timothy bought 10 cookies for $5.00, so and . Let's replace the values to find the slope of our line:

Now that we have the slope of our line, we can find the equation for the total cost of cookies:

Finally, to graph our line, we just need to plot tow points. We already know that Timothy bought 10 cookies for $5.00, so one point is (10, 5)

To find another point we can plug any number between 1 and 10 (the possible number of cookies Timothy can buy) for in our line equation. Let's say that the other point will be the total cost of 8 cookies, so

Therefore, our second point is (8, 4)

Now we can join our point with our line as shown in the picture.

7

step-by-step explanation:

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry