Question

Find the slope of line passing through : $(2,3)$ and $(4,1)$

Answer 1

Equation of a line $y=mx+c$

It is passing through $(2,3)$ and $(4,1)$

$\begin{array}{c}3=2m+c\\ 1=4m+c\\ \underset{–}{---}\\ 2=-2m\Rightarrow m=-1\\ slopeofline=-1\end{array}$