Question

https://www.connexus.com/content/media/149657-292007-121618-PM-349709065.gif
Complete the table and choose the solution for each given value of x in questions 8–13.
When x = –2 (1 point)
y = –(–2)2 + 2 = –2; (–2, –2)
y = (–2)2 + 2 = 2; (–2, 2)
y = –(2)2 + 2 = –2; (2, –2)
y = –(–2)2 – 2 = 2; (–2, –2)

9. When x = – 1 (1 point)
y = –(–1)2 + 1 = 2; (–1, 1)
y = (–1)2 + 2 = 1; (–2, 1)
y = –(–1)2 + 2 = 1; (–1, 1)
y = (–1)2 + 2 = 1; (1, –1)

10. When x = 0 (1 point)
y = –(0)2 + 2 = 2; (0, 2)
y = –(0)2 + 2 = –2; (0, –2)
y = (0)2 – 2 = 2; (2, 0)

11. When x = 1 (1 point)
y = –(1)2 – 2 = 1; (1, 1)
y = –(1)2 + 2 = 1; (1, 1)
y = (1)2 + 2 = –1; (1, 1)
y = (1)2 + 2 = 1; (1, –1)

12. When x = 2 (1 point)
y = (2)2 – 2 = 2; (2, –2)
y = –(2)2 – 2 = –2; (2, 2)
y = (2)2 + 2 = –2; (2, 2)
y = –(2)2 + 2 = –2; (2, –2)

Answer 1

@ilovemath2 Have you ever used geogebra? It is super helpful for understanding function translations.

Answer 2

HEEELP!

Answer 3

You have the right idea, substitute the value of x into the given equation and then solve for y. The result is x = the given number and y = the computed number.

but....
When x = –2
y = –(–2)2 + 2
= (2)2 + 2
= 4 + 2
= 6

so when x = -2, y = 6

The (x,y) point is then just (-2,6).

If this is a computation type problem, then this is good practice for substitution. Hope this hint helps.

Answer 4

Do you have Geogebra open?

Answer 5

You can very quickly check your answers to this question with Geogebra.

Answer 6

oh okay thanks

Answer 7

Click "perspectives" then "spreadsheet & graphics".
Then type in the chart given to you in the problem.

When you have that let me know, I'll show you what to do next.

Answer 8

Kay got it was starting to set that up earlier :)

Answer 9

Ok, now under y = -x^2 + 2
click that cell
type "=" (without quotes)
then click on the cell that says -2, just to the left of it. If you did this right, "A2" will appear in the parenthesis.

Then just type the rest of the equation...

= -(A2)^2 +2

press enter, and 6 should appear there.

Answer 10

right but none of the multiple choice answers are that which is stumping me

Answer 11

Oh poo hold on.

-2 should be the answe.r

-(-2)^2 = -2

but -(-2)2 = 4

The "^" means "raised to the power of".

Answer 12

Well after getting -2 in that first slot, you can then copy/paste down the line and it should fill out for you.

Answer 13

Yes of course Now i got this answer for number 8 y = –(–2)2 + 2 = –2; (–2, –2)

Answer 14

Ok, hold on right there.

y = –(–2)2 + 2

Do you mean

\[\huge y = –(–2)2 + 2\]

or


\[\huge y = –(–2)^2 + 2\]

These are VERY DIFFERENT Answers.

Answer 15

that seems correct because x (the first number) is -2 and then y -2
I mean the 2nd answer

Answer 16

Beware when you copy/paste anything with an exponent. It is often dropped, and confusion abounds!

Answer 17

true sorry so it seems i'm right on 8 could you go for a few more or no cause if not I think I can figure it out from here but I would love your help

Answer 18

I only need number 12 answered now