To find the slope of the line using the points (2, 24) and (4, 48), we use the formula for slope, which is:
\[ \text{slope} = \frac{\text{rise}}{\text{run}} = \frac{y_2 - y_1}{x_2 - x_1} \]
Where \( (x_1, y_1) = (2, 24) \) and \( (x_2, y_2) = (4, 48) \).
-
Calculate the rise (change in y-values): \[ \text{Rise} = y_2 - y_1 = 48 - 24 = 24 \]
-
Calculate the run (change in x-values): \[ \text{Run} = x_2 - x_1 = 4 - 2 = 2 \]
-
Calculate the slope: \[ \text{slope} = \frac{\text{Rise}}{\text{Run}} = \frac{24}{2} = 12 \]
Thus, the rate of change is 12 pounds per month. The correct answer is:
A 12