A line with slope 2 intersects a line with slope 6 at the point (40, 30).
What is the distance between the x-intercepts of these lines? Select the correct option:
A) 4
B) 6
C) 8
D) 10
E) 12

Rationale: the line with slope 2 passing through ( 40 , 30 ) has x - intercept 40 − ( 30 / 2 ) . the line with slope 6 passing through ( 40 , 30 ) has x - intercept 40 − ( 30 / 6 ) . so the difference in the x - intercepts is ( 30 / 2 ) − ( 30 / 6 ) = 10 . correct answer d
Answer: D