SAT Math Multiple Choice Practice Question 322: Answer and Explanation
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?
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 .