> Paul and Seth know that one
point on a line is (4,2) and the
slope of the line is -5. Each
student wrote a different
equation relating x and y.
Paul
Seth
Y-Y
A. Do the two equations
represent the same line?
Construct a mathematical
argument to support your
answer.
y = mx + b
2 = 5(4) + b
2 = -20 + b
22 = 6
y = -5x + 22
m =
X2 - x
-5=
y-2.
X-4
5(x - 4) = y-2