Write a linear equation that represents the cost of buying t-shirts from paula’s printing. identify the meaning of each variable in your equation.

Step-by-step explanation:

Let

x ----> the number of t-shirts

y ----> the cost of buying T-shirts from Paula’s Printing in dollars

take two points from the given data

we have

(2,43) and (4,86)

step 1

Find the slope

The formula to calculate the slope between two points is equal to

substitute the values in the formula

step 2

Find the equation of the line in point slope form

we have

substitute

step 3

Convert to slope intercept form

Isolate the variable y

This linear equation represent a proportional relationship (the line passes through the origin)

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.