Question

calcule a distância entre o ponto A e a reta R. A ( 2,2) e R : 2Y+X-1=0

Answer 1

d = |axo + byo +c| / \/(a²+b²)
d = |1.2+2.2-1| / \/(1²+2²)
d = |2+4-1| / \/(1+4)
d = |5| / \/5
d = 5 / \/5
d = 5\/5 / 5
d = \/5

Answer 2

2*2 + 2 -1 =
4+2-1 =
resposta= 5