$$a \gt b \gt 0$$
$$r \gt s \gt 0$$
In the xy-plane, line $$l$$ crosses the y-axis at $$(0, a)$$ and crosses the x-axis at $$(r, 0)$$, while line $$m$$ crosses the y-axis at $$(0, b)$$ and crosses the x-axis at $$(s, 0)$$.
Quantity A
The slope of line $$l$$
Quantity B
The slope of line $$m$$