## Ilovemeowmeow 3 years ago For y = x2 − 4x + 3, Determine if the parabola opens up or down. State if the vertex will be a maximum or minimum. Find the vertex. Find the x-intercepts. Describe the graph of the equation. PLEASE HELP! Need to finish this..

1. JayDS

where do you need help?

2. JayDS

first of all the parabola definitely opens up indicated by x^2

3. JayDS

because it is positive x^2 whereas if it was -x^2 then you would know it is an upside down parabola or opens down.

4. Ilovemeowmeow

I need helping showing work for vertex and x intercept

5. JayDS

ok, to find the vertex(turning point) simply we need to factorize the equation first.

6. JayDS

do you know how to do that?

7. Ilovemeowmeow

And if the vertex is max or min. And no I do not.

8. JayDS

vertex is definitely a minimum because the graph is opening upwards.

9. JayDS

|dw:1344039832324:dw|

10. JayDS

that's an example

11. JayDS

it's opening upwards so there's a minimum.

12. JayDS

opposite applies so opening downwards, there is a maximum

13. Ilovemeowmeow

okay.

14. godorovg

guys you mind if I help here too?

15. Ilovemeowmeow

The more the better!

16. godorovg

look at the graph that has been drawn.

17. JayDS

ok, I'll leave it to u @godorovg

18. godorovg

no, I could use the help please stay

19. godorovg

I can not draw like you

20. Ilovemeowmeow

21. godorovg

okay

22. godorovg

first I am trying to help with this question only, what do you know about the vertex already?

23. Ilovemeowmeow

nothing really.

24. godorovg

that is alright, let's take this slow than.

25. godorovg

one min

26. godorovg

in order to what you are asking we must do something to complete square

27. godorovg

let me ask have you ever done this before for finding the vertex?

28. Ilovemeowmeow

nope

29. godorovg

I am going to use a visual aide here to show you how this done, I went out on the web and found step by step how to do this.

30. godorovg

please watch this you tub video here : ► 4:51► 4:51 www.youtube.com/watch?v=niHBt4rkavA

31. Ilovemeowmeow

I got it, thank you!

32. godorovg

no problem glad I could help out..