Task: Question Answering
Input (English): Problem: in the coordinate plane, line a has a slope of - 2 and an x - intercept of 2. line b has a slope of 5 and a y - intercept of - 10. if the two lines intersect at the point ( a, b., what is the sum a + b ?
Options: a. 0, b. 1, c. 2, d. 3, e. 4
Output (English): c