Răspuns :
{x,y} i.p.{15,8} => 15x=8y
f(x)=y=x+1
15x=8y=> y=15x/8
15x/8=x+1
15x=8x+8
7x=8
x=8/7
y=x+1=8/7+1=8/7+7/7= 15/7
Coordonatele (8/7;15/7)
Răspuns:
Explicație pas cu pas:
abscisa = x
ordonata = y
y = f(x) = x + 1
15x = 8y
x = 8y/15
y = 8y/15 + 1
y - 8y/15 = 1
15y/15 - 8y/15 = 1
7y/15 = 1
y = 15/7
x = 8/15*15/7 = 8/7
Punctul este A (8/7;15/7)