Miguel volunteers at his local food pantry and takes note of how much money is donated each day during a 10-day fundraising phone-a-thon. Below is the graph that represents the data that he collected.
The slope of the line that represents the data that Miguel collected is 25, and the y-intercept is 50. What do the slope and y-intercept represent in Miguel’s situation?
a. The slope indicates that the food pantry collects $50 each day. The y-intercept indicates that the pantry began with $50 in its donation account.
b. The slope indicates that the food pantry collects $25 each day. The y-intercept indicates that the pantry began with $25 in its donation account.
c. The slope indicates that the food pantry collects $25 each day. The y-intercept indicates that the pantry began with $50 in its donation account.
d. The slope indicates that the food pantry collects $50 each day. The y-intercept indicates that the pantry began with $25 in its donation account.

ANSWERS

2016-04-21 22:07:04

The correct answer is: c. The slope indicates that the food pantry collects $25 each day. The y-intercept indicates that the pantry began with $50 in its donation account. We can use the data points (0,50) and (10, 300) to find the slope. The slope is (300-50) / (10-0) = 250 / 10 = $25 per day. On day 0, the y-intercept of 50 shows that the account had $50.

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