O conjunto dos números reais, simbolizados por R, é a união entre o conjunto dos números racionais e o conjunto dos números irracionais. O conjunto dos números reais engloba praticamente todos os conjuntos numéricos que já estudamos. São exemplos de números reais a)os números naturais
b) os números inteiros
c) os demais finitos
d)os decimais infinitos periódicos
e) os decimais infinitos não periódicos

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step-by-step explanation:

the orientation of the parabolas can easily be found by analysing the power of x and y and their signs. if x is squared , parabola opens up and also if its coefficient is negative it opens down. if y is squared , the parabola opens right and also if its coefficient is negative it opens left. however in order to do the above analysis our equation must be in standard form .

our parabola is

which is not standard form of any parabola . hence we square on both hand side and convert it into standard form.

hence we see that x is squared and its coefficient is non negative . there for it opens up.

translate k to n and reflect across the line containing jk.