Question

Can't figure this out

Answer 1

try a couple values out

Answer 2

I've plugged them all in

Answer 3

which one works?

Answer 4

Then you didn't plug them in correctly, i already see the answer

Answer 5

for x= 1
y = 16

Answer 6

The closest one I got was C

Answer 7

Did you try B? What values do you get for that?

Answer 8

3x^2+13

plug x values in and see what you get.

Answer 9

3(1) + 13 = 16 ??? true but
3(2) + 13 = 19 Not 25 so the first one is not true

Answer 10

Looking at the rise over run, you will see that the slope is not constant, and thus it is not a linear function.

Answer 11

I thought it had to equal 40?

Answer 12

3x^2+13

3(3^2)+13

3 times 9=27

27+13=40

the input of 3 works. try the other inputs to make sure.

Answer 13

When x=3, then y has to be 40

Answer 14

welp, she got it.

Answer 15

Which one is 40 when you put x = 3

Answer 16

I picked B

Answer 17

and by quick observation like @wio said, the increase in output is not constant for each increase in input, so the function is not linear, (power of x is 1)

Answer 18

right, B is the one

Answer 19

If you get this type of prob again, just test every x value and see if it is true, if you know nothing else