Question

Deternine a equacao da reta que passa pelo ponto A(2,-5) e tem coeficiente angular n=-2

Answer 1

A(2,-5) e m = -2

y - ya = m ( x - xa )

y + 5 = -2 ( x - 2 )

y + 5 = -2x + 4

y = -2x + 4 - 5

y = -2x - 1

2x + y + 1 = 0