Since the line is raising the slope is positive.
\Next, find the slope.
\
Substitute –13 for y2, –3 for y1, 1 for x2, and 6 for x1 in slope formula. \ \
\ (Product of two same signs is positive) \ \
(Subtract:
)
(Add:
) \ \
(Cancel common signs) \ \
(Divide:
)
Slope is positive and slope is .