Question

Heidi looked at this graph and thought, “The first point I see is at 2 tsp of nutmeg and 3 tsp of cinnamon. The unit rate is 3 tsp of cinnamon for every 2 tsp of nutmeg.”

On a coordinate plane, the x-axis is labeled Nutmeg (teaspoons) and the y-axis is labeled Cinnamon (teaspoons). A line with positive slope goes through point (2, 3).

Is Heidi correct
No. The unit rate should be 2 teaspoons of cinnamon to 3 teaspoons of nutmeg.
No. The unit rate should be 1.5 teaspoons of nutmeg to 1 teaspoon of cinnamon.
No. The unit rate should be 1.5 teaspoons of cinnamon to 1 teaspoon of nutmeg.
Yes. Heidi is correct.

Answer 1

Yes. Heidi is correct — the ratio is 3 tsp cinnamon per 2 tsp nutmeg, which is 3/2 = 1.5 tsp cinnamon per 1 tsp nutmeg.