Identify the unit rate on the graph.

(2,120) (3,180) (4,240)

To find the unit rate on a graph, we need to determine the rate of change between two points and identify the units involved.

Let's consider the points (2,120) and (3,180). The change in the y-coordinate (vertical change) is 180 - 120 = 60, and the change in the x-coordinate (horizontal change) is 3 - 2 = 1.

Therefore, the unit rate is 60/1 = 60.

The units involved are not given in the problem, so we cannot determine the specific unit rate.

The table shows the grade, g, on a test when the number of problems, n, are correct. Write an equation to model the situation.

n:
10
18
21

g:
40
72
84