Question

The table lists the values for two parameters, x and y, of an experiment. What is the approximate value of y for x = 4.0?
x y
2.5 6.25
9.4 88.36
15.6 243.36
19.5 380.25
25.8 665.64

Answer 1

By looking at the plotted points, what is the rule in this function?

Answer 2

im stuped on it give me a hint

Answer 3

What is the function/rule when you plug x=2.5 you will get 6.25?

Answer 4

*3.5?

Answer 5

You mean 2.5 times 3.5 gives you 6.25?

Answer 6

2*3=6

Answer 7

5*5=25

Answer 8

?

Answer 9

No, 2.5*3.5=8.75 not 6.25

Answer 10

oh ok

Answer 11

is it 2.5?

Answer 12

Yes.

Answer 13

ok now what do I do?

Answer 14

if x=2.5, then x*x which means 2.5*2.5= 6.25. What is the rule? I already mentioned it.

Answer 15

Let us try 9.4. What rule when x=9.4 gives you 88.36?

Answer 16

x=4.0

Answer 17

what is 9.4 * 4.0?

Answer 18

no x=9.4

Answer 19

Yes.

Answer 20

What is the rule here? Can you write the equation for y now?

Answer 21

y=x*x?