Answer:

• Which of the following situations illustrates a joint variation?

a. The heat required to melt a substance to its mass

b. The perimeter of a square to its side

c. The speed of the boat per hour to the amount of diesel

d. The volume of a rectangular box to its length, width, and height.

• Which of the following illustrates variation?

a. y=kwx

b. y=k/wx

c. y=kx/w

d. k=xyw

Explain:

4. The answer is D. the clue word is volume.

so thats the answer.

5. The answer is D. also cuz D is the different from others and this is a variation.