- (B) See the figure. If we let m be the slope of the line, then its equation is y − 2 = m(x − 1)
with intercepts as indicated in the figure.
The area A of the triangle is given by
Then and equals 0 when m = ±2; m must be negative.
The area A of the triangle is given by
Then and equals 0 when m = ±2; m must be negative.