45. In the standard (x,y) coordinate plane, the 3 lines with equations y = x - 3, y = -x + 2, and x = 0 bound a triangular region. What is the area, in square coordinate units, of that triangular region? (A blank grid has been provided for your use.)

Answer and Explanation

Your Answer is

Correct Answer is D

Explanation

The intersection point of the first two straight lines is (5, 0), that is, the height is 5, and the intersection points with the y-axis are (0, -3), (0, 2), that is, the bottom is 5, S=5×5× 0.5＝12.5