## anonymous one year ago What is the equation of the following graph in vertex form?

1. anonymous

2. anonymous

Courtesy of Texas Instruments

3. anonymous

answers y = (x − 3)2 − 1 y = (x + 3)2 − 1 y = (x − 4)2 − 2 y = (x − 4)2 + 8

4. anonymous

5. anonymous

6. anonymous

7. ganeshie8

Look at the graph, what are the coordinates of vertex? |dw:1435159281614:dw|

8. anonymous

did you get it?

9. anonymous

the of the vertex would be ( -3,-1)

10. ganeshie8

Yes, remember the vertex form of parabola ?

11. anonymous

it's $y =a \left( x-h \right)+k$

12. anonymous

yea good job

13. ganeshie8

$y =a \left( x-h \right)^2+k$

14. ganeshie8

where the vertex is $$(h,~k)$$

15. ganeshie8

plug in the vertex coordinates in above equation

16. anonymous

$y=a \left( x-\left( -3 \right) \right)^{2}-1$

17. ganeshie8

good, which is same as $y=a \left( x+3\right)^{2}-1$

18. ganeshie8

look at the options

19. anonymous

oh it's the second answer right

20. ganeshie8

Correct! good job!`

21. anonymous

thank you so much you helped alot

22. ganeshie8

yw!