Crew B ears $315 after 3 hours, $525 after 5 hours, and $735 after 7 hours of works. Explain whether or not Crew B's data show a proportional relationship. If the data are proportional, identify the constant of proportionality.

answer:  

123455421

step-by-step explanation: easy

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)