SAT Math Multiple Choice Practice Question 322: Answer and Explanation

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Question: 322


In the figure above, the slope of line l is and the area of the triangle is 48 square units. What is the value of x + y?

A. 13
B. 14
C. 19
D. 22
E. 96

Correct Answer: D


D Two points on line l are (0, 0) and (10, y). Find the slope of the line:

Since , the height of the triangle is 6. Find the area:

Now find .

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