## julliemyers 2 years ago Graph the exponential function. y = 5(2)^x

1. julliemyers

@S0fw0N

2. hartnn

can you plot points on graph, like given any point (a,b) can u plot it on graph ?

3. hartnn

first find, what is y=...? when x=0 and u get a point like (0,b)

4. julliemyers
5. julliemyers

i think its c

6. julliemyers
7. hartnn

oh, can u use wolf ?

8. abb0t

pick a few points for x to get a y-value plot on a graph.

9. hartnn

you will get the y-intercept if u put x=0

10. hartnn

u know what that means ? you get a point where the graph cuts y-axis.

11. julliemyers

when i put x=o i get y=5 on wolf

12. hartnn

so, the y-intercept is (0,5) which eliminates b,c choices

13. hartnn

right ?

14. S0fw0N

15. julliemyers

i thought it was c 0.0

16. hartnn

to decide among a or d you can put x=1, and see what you get as y and the point will be of the form, (1,b) and its not c.

17. julliemyers

its A i just turned it and its a

18. hartnn

turned it ?

19. julliemyers

yea the graph they had on wolf was C but if u turn it its A and its (1,5)

20. hartnn

when you put x=1, u get y= 5 (2)^1 = 10 so the point is (1,10) which rules out d, if you observe....

21. agent0smith

Since it's all positive numbers, the line will be going up as you go to the right, so you can immediately rule out any graphs where the line goes down as you go the right. Which leaves only a and c. Then you can check values as hartnn showed.

22. julliemyers

the awsner was A, i got a 90%

23. agent0smith

a is correct :) you can also plot graphs on google btw. Just type in 5(2)^x and hit enter.