Resposta :
Y = ax + b
a = y2 - y1 = -5 -(-1) => -5+1 = - 4
x2 - x1 2 -(-3) 2+3 5
calculo de b:
(2,-5) e a = -4/5
-5= - 4(2) + b => -5 = -8/5 + b mmc=5
5
-25 = -8 +5b => -25+8 = 5b => -17 = 5b =>b= -17/5
Y= -4/5x - 17/5
Y = ax + b
a = y2 - y1 = -5 -(-1) => -5+1 = - 4
x2 - x1 2 -(-3) 2+3 5
calculo de b:
(2,-5) e a = -4/5
-5= - 4(2) + b => -5 = -8/5 + b mmc=5
5
-25 = -8 +5b => -25+8 = 5b => -17 = 5b =>b= -17/5
Y= -4/5x - 17/5