## anonymous one year ago For the function y = f(x), what is the ordered pair for the point on the graph when x = 3n - 4?

1. anonymous

(3n - 4, f(n)) (3n - 4, f(3n - 4)) (x, f(3n)) (x, 3n - 4)

2. SolomonZelman

For a function y=f(x), when x=2, my ordered pair would be $$(2,~f(2))$$. Do you agree with that?

3. SolomonZelman

And same thing is when x=3n-4, except that instead of a 2 I got $$\small3{\rm n}-4$$.

4. anonymous

mhm okay yea i understand

5. anonymous

so its d right

6. SolomonZelman

no

7. SolomonZelman

let me ask you again. I have a function y=f(x), and my x=4, what is the ordered pair?

8. anonymous

$(4,f4)$

9. SolomonZelman

yes, $$\color{blue}{(4,f(4))}$$

10. SolomonZelman

Ok, now my function is still f(x), but my x=8b what is my ordered pair then?

11. anonymous

$(8b, f(8b))$?

12. SolomonZelman

yes, that is right

13. SolomonZelman

now, my function is still f(x), and my x=3n-4 my ordered pair is?

14. anonymous

$(3n-4 , f(3n-4))$

15. SolomonZelman

yes, that is right....

16. anonymous

17. SolomonZelman

18. anonymous

Awesome thank you so much again ! ;p

19. SolomonZelman

yw

20. anonymous

could you help me with this one

21. anonymous

The table below represents the velocity of a car as a function of time: Time (second) x Velocity (m/s) f (x) 15 45 22 66 29 87 36 108 The average rate of change of the function between x = 15 to x = 29 is __________m/s2 and represents the car's acceleration.

22. anonymous

23. anonymous

thats the table

24. anonymous

I'm thinking the answer is 32 but im not so sure

25. SolomonZelman

ok, you have two points (15,45) and (29,87) all you need to do is to find the slope. |dw:1437936165499:dw|

26. anonymous

3

27. SolomonZelman

yes

28. SolomonZelman

that is the average rate of change

29. anonymous

awesome thanks

30. SolomonZelman

anytime!

31. anonymous

;p