Answer:
B. 15, 20, ...
Explanation:
You want to know which sequence of numbers has the steepest graph.
Slope
The slope (steepness) of the graph is the ratio of the change in y to the change in x. Here, we presume the x-values for each of these sets of points are 1, 2, 3, 4, ....
That means the slope will be the difference of adjacent y-values. Subtracting the first from the second, we get ...
8 -4 = 4
20 -15 = 5
52 -50 = 2
7 -4 = 3
The sequence in which the values differ by 5 has the largest difference, so will have the steepest graph:
15, 20, 25, 30, ...