3. Through the point $(2,3)$ on the line $p: y=2 x-1$, a line $q$ perpendicular to the line $p$ was drawn. Find the area of the convex quadrilateral bounded by the lines $p, q$ and the coordinate axes.


Answer: $4.75 \mid 19 / 4$

## Examples of answer notation:

## 8

8.5

$17 / 2$

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