To create an equation, you have to find the slope of the line m = $\frac{ y_{2}- y_{1} }{ x_{2}- x_{1} }$ Where m is your slope  and: (4,5) => $(x_{1}, y_{1})$ (-3,-1) => $(x_{2} , y_{2} )$ So, plug the numbers into the equation $m = \frac{-1-5}{-3-4} = \frac{-6}{-7} = \frac{6}{7}$ The slope of this equation is 6/7 Point slope form of a line is: $y - y_{1} = m(x - x_{1} )$ (-3,-1) => $(x_{2} , y_{2} )$ and m = 6/7 y + 1 = 6/7 (x + 3)