## Shido88 Group Title h(3) h(x)= 5|x|/x one year ago one year ago

1. Shido88 Group Title

@Aylin

2. Shido88 Group Title

i plug this one in calculator and got 5 as final answer

3. Aylin Group Title

That looks right.

4. Shido88 Group Title

alright cool :D

5. Shido88 Group Title

for the next one it's asking for h(-2/3) but you can't use a negative for absolute value right? or is it ?

6. Shido88 Group Title

umm why over 5 ? isn't it over -2/3 ?

7. Aylin Group Title

@Shido88 Sorry, I got distracted. Back now. Absolute value as a function either leaves the thing inside of it alone if it is 0 or positive, or multiplies it b negative 1 if it is negative. So |x|=x IF x is greater than or equal to 0, and |x| = -x IF x is less than 0. So for h(-2/3) you would have$h(\frac{-2}{3})=5\frac{|\frac{ - 2}{3}|}{\frac{-2}{3}}=5\frac{\frac{2}{3}}{\frac{-2}{3}}$

8. Aylin Group Title

Hmm, looks like the negative signs didn't display properly... Well, the 2s that are shifted way over to the right are supposed to have negative signs in front of them.

9. Shido88 Group Title

so basictly anything negative inside the absolute value will turn into positive ?

10. Aylin Group Title

Yep!

11. Shido88 Group Title

and once u turn the negative into positive then the absolute value sign goes away ?

12. Aylin Group Title

In this case, yes.

13. Shido88 Group Title

14. Aylin Group Title

Ahh, well this depends on if a is positive or not. :P Find the answer for if a is positive, and then the answer for if a is negative. Then you say which one it is based on a.

15. Shido88 Group Title

hmm ? what ? lol

16. Aylin Group Title

If $a \ge 0$then$h(3a)=5$and if$a < 0$then$h(3a)=-5$

17. Shido88 Group Title

i see

18. Shido88 Group Title

what do i have to do to know if a>0 ?

19. Shido88 Group Title

how did you get h(3a)= 5 ? do you just cancel out the 3a ?

20. Aylin Group Title

Yeah.$5\frac{3a}{3a}=5$

21. Shido88 Group Title

oh i see

22. Shido88 Group Title

so if it was h(a-2) would the final answer be 5 anyway ?

23. Aylin Group Title

Either 5 or -5, depending on a.

24. Shido88 Group Title

ok!

25. Shido88 Group Title

gtg now, thanks again for helping me Aylin :)