Question

Determine a equaçao getal da reta que passa pelos pontos: A(-1,5) e B(-2,3)

Answer 1

y-y1 = y2-y1 / x2-x1 (x-x1)
y - 5 = 3-5/-2+1 (x+1)
y-5 = 2(x+1)
y-5 = 2x+2
y = 2x +2 + 5
y = 2x +7