Question

Determine a equação da reta que passa pelo ponto P(4,-5) e tem o coeciente angular m=1

Answer 1

$P(4;-5)\ e\ m=1\\\\\\ (y-y_{'})=m(x-x_{'})\to \\\\ (y-(-5))=1(x-4)\to \\\\y+5=x-4\to \\\\ y=x-4-5\to \\\\ y=x-9$