### Home > CALC > Chapter 1 > Lesson 1.2.5 > Problem 1-84

1-84.

Find the area of each triangle separately. Recall that the area belowthe x-axis is negative. Add the negative and the positive regions together.

[Area of triangle *A*] + [Area of triangle *B*]

[Area of triangle *A*] + [Area of triangle *B*] = 10

Simplify, and solve for *k*.