Answer:
[tex]\frac{RQ}{PQ}[/tex]
Explanation:
The slope of a graph at a point can be calculated from the tangent to the graph at that point, and it is given as
[tex]m=\frac{\Delta y}{\Delta x}[/tex]
where
[tex]\Delta y[/tex] is the increment in the y-variable
[tex]\Delta x[/tex] is the increment in the x-variable
From the figure we see that in this case:
[tex]\Delta y =RQ\\\Delta x = PQ[/tex]
So, the slope at point A is
[tex]m=\frac{RQ}{PQ}[/tex]
