CAT 2000 | Question: 57

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$\begin{array}{|c|c|c|c|c|c|c|c|} \hline x & 1 & 2 & 3 & 4 & 5 & 6 \\\hline y & 4 & 8 & 14 & 22 & 32 & 44 \\\hline \end{array}$

In the above table, for suitably chosen constants $a, b$ and $c,$ which one of the following best describes the relation between $y$ and $x?$

1. $y = a + bx$
2. $y = a + bx + cx^2$
3. $y = e^{a + bx}$
4. None of the above

Take a=2, b=1, c=1 then checking different values
F(1) = 2+(1*1)+(1*1)=4
F(2) = 2+(1*2)+(1*4)= 8

In this way all values are satisfied...

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