A line with a gradient of $3$ passes through the points $\left( -1,2 \right)$ and \(\left( k,k+1

Question

A line with a gradient of $3$ passes through the points $\left( -1,2 \right)$ and $\left( k,k+13 \right)$. Calculate the value of $k$.

Accepted Answer

$k = 4$

Coordinate Geometry - Gradient of a Straight Line