Question

11 repede rezolvare completa ​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

m∡PBA =90 →PB⊥AB

(m)  AB = 3*0/0-1=-3

(m) PB= -1/ (m) AB= 1/3→1/3=3-0/0- p →p=-9 →P(-9 ,0 )

-b)

Q ( 0,y)

m∡QAB =90 °→AB⊥QA

(m) AB =-3→ (m) QA = 1/ m AB =1/3

1/3= 0-y /1-0 =-y →y= -1/3

Q ( 0,1/3)