In the coordinate plane, Line A has a slope of -1 and an x-intercept of 1. Line B has a slope of 4 and a y-intercept of -4. If the two lines intersect at the point (a,b), what is the sum a+b?	Choices.
A) 0  B) 1  C) 2  D) 3  E) 4
The equation of Line A is y = -x + 1   The equation of Line B is y = 4x - 4   4x - 4 = -x + 1   x = 1   y = 0   The point of intersection is (1,0) and then a+b = 1.   The answer is 1.
<result>B</result>
In the coordinate plane, Line A has a slope of -1 and an x-intercept of 1. Line B has a slope of 4 and a y-intercept of -4. If the two lines intersect at the point (a,b), what is the sum a+b?