(Unemat 2010) Dada a equação de reta (s): 2x - y +1 = 0 , a equação de reta paralela a ,que passa pelo ponto P(1,1) será:
a) 2x - y = 0
b) 2x + y +1 = 0
c) 2x + y -1 = 0
d) 2x - y -1 = 0
e) 2x - y + 2 = 0
Copyright © 2024 1QUIZZ.COM - All rights reserved.
Answers & Comments
Verified answer
2x - y + 1 = 0
- y = - 2x - 1
y = 2x + 1
2 = y - 1 / x - 1
2x - 2 = y - 1
2x - y - 1 = 0
------------------------ > D
m = 2
P = (x,y) = (1,1)
Equação geral da reta
y - y0 = m(x - x0)
y - 1 = 2(x - 1)
y - 1 = 2x - 2
2x -- 2 - y + 1 = 0
2x - y - 1 = 0
resposta: alternativa d)
2x - y + 1 = 0
y = 2x + 1
y = 2x + b
1 = 2*1 + b
b = 1 - 2 = -1
y = 2x - 1
2x - y - 1 = 0 (D)
pronto