Question

scrieți ecuatia dreptei AB :A(-2,4),B(-4,-6)

Answer 1

[tex](AB): \dfrac{x-x_A}{x_B-x_A}=\dfrac{y-y_A}{y_B-y_A}\\ \dfrac{x+2}{-4+2}=\dfrac{y-4}{-6-4}\\ \dfrac{x+2}{-2}=\dfrac{y-4}{-10}|\cdot (-10)\\ 5(x+2)=y-4\\ 5x+10=y-4\\ \boxed{y-5x-14=0}[/tex]