## aussy123 Group Title How do you graph this x2- 3x + 2<= 0 one year ago one year ago

1. aussy123 Group Title

$x^2+3x+2\le0$

2. dopeboz Group Title

wow!!!! i wouldnt know sorry

3. aussy123 Group Title

its ok

4. dopeboz Group Title

k. but anyways i think your cute tho.

5. helder_edwin Group Title

first solve it as if it were an equation $\large x^2-3x+2=0$

6. myko Group Title

it's a parabola. To find where it crosses x-axis, write it like this: x^2-3x+2=(x-1)(x-2)=y so it will cross x-axis at x=1 and x=2 since you lookiing for points that are less than 0 it will be the part that is between this two points: |dw:1351781925843:dw|

7. aussy123 Group Title

oh so I dont have to solve for anything

8. myko Group Title

|dw:1351782141285:dw|

9. helder_edwin Group Title

no it is not. @myko !!!!!

10. helder_edwin Group Title

the inequality has only ONE variable. its graph CANNOT bidimensional.

11. helder_edwin Group Title

anyways. myko just gave the answer $\large 0=x^2-3x+2=(x-1)(x-2)$ so x=1 or x=2

12. myko Group Title

look my last drawing x^2-3x+2=y is a function with range (vertex, infinity) it is less or equal 0 in the part that is under x-axis. That's what i drowed

13. aussy123 Group Title

ok im a bit confused

14. myko Group Title

i gave the cross points to be able to grapfh it. The answer is the part under x.-axis

15. myko Group Title

@aussy123 don't be confused by @helder_edwin . The graph you looking for is: |dw:1351782419649:dw|

16. aussy123 Group Title

Oh I see , @myko , I had to reread your first comment to get it, thanks because my book is giving me alot of confusing stuff

17. myko Group Title

yw

18. helder_edwin Group Title

again. the problem says: graph $$x^2-3x+2\leq0$$ it does NOR say graph $$x^2-3x+2\leq y$$.

19. helder_edwin Group Title

sorry *NOT

20. myko Group Title

problem says: $y \leq 0$

21. myko Group Title

you wrong pal

22. myko Group Title

How do you GRAPH this x2- 3x + 2<= 0

23. helder_edwin Group Title

it is a one-dimensional problem (one variable) but u turned it into a two-dimensional problem by adding a "y" that was never there.

24. myko Group Title

x2- 3x + 2 represents values of y, dude.

25. myko Group Title

it is one dimentional, :)

26. myko Group Title

y is DEPENDENT

27. myko Group Title

@helder_edwin

28. helder_edwin Group Title

but it was never there. u r not graphing a function "dude".