Question

calcule a distância entre o ponto P(4,-1) e (r) x-y=0

Answer 1

d= A.xp + B.yp + C / √A²+B³

d = 1.4 + (-1).(-1) + 0 / √1²+(-1)²

d = 4 + 1 / √2

d = 5/√2 × (√2/√2)= 5√2 /2 ✓