Question

Mrs. Henderson used 6 3\4 yards of fabric to make 3 elf costumes. What equation can be used to model the total number of yards of fabric y for x costumes? Write the equation in the form y = kx

Answer 1

number of yards of fabric = 6 3/4 = y

Number of costumes = 3 = x

y = kx​

Where k is the constant of proportionality.

Replace with the values of x and y:

6 3/4 = k 3

Solve for k:

[6 3/4] / 3 = k

k= 2 1/4

The equation:

y = 2 1/4x