CPM Homework Help : AC Problem 4-7

Use your pattern-finding techniques to fill in the missing entries for the table below. Then find a rule for the pattern.

$\text{IN}(x)$

in (x) column 1 $4$

in (x) column 2 $8$

in (x) column 3 $3$

in (x) column 4 $-2$

in (x) column 5 $-6$

in (x) column 6 $0$

in (x) column 7 $5$

in (x) column 8 $7$

$\text{OUT}(y)$

out (y) column 1 $17$

out (y) column 2 $65$

out (y) column 3 $10$

out (y) column 4 $5$

out (y) column 5 is blank

out (y) column 6 $1$

out (y) column 7 $26$

out (y) column 8 is blank

Hint:

What is $4^2$ ?
What about $8^2$ ?
$3^2$ ?

More Help:

$17=4^2+1$
$65=8^2+1$
$10=3^2+1$
Can you follow the pattern?

Answer:

$y=x^2+1$