Question

Check if $(2,3)$ will lie on the graph of $(y-2x)=-3$, without drawing the graph.

Answer 1

$y-2x=-3$.

Put $x=2$, if you get $y$ as $3$ then $(2,3)$ is on the line

$y-2\times 2=-3$

$y=-3+4$

$y=1$

$\therefore (2,3)$ doesnt lie on the line $y-2x=-3$.