The slope-point form: \(y-y_0=m(x-x_0)\)
\(m=\dfrac{3}{4};\ (5;-8)\to x_0=5\ and\ y=-8\)
subtitute
\(y-(-8)=\dfrac{3}{4}(x-5)\\\\y+8=\dfrac{3}{4}x-\dfrac{15}{4}\\\\y+8=\dfrac{3}{4}x-3\dfrac{3}{4}\ \ \ \ |subtract\ 8\ from\ both\ sides\\\\\boxed{y=\frac{3}{4}x-11\frac{3}{4}}\)
