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julliemyers

Graph the exponential function. y = 5(2)^x

  • one year ago
  • one year ago

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  1. julliemyers
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    @S0fw0N

    • one year ago
  2. hartnn
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    can you plot points on graph, like given any point (a,b) can u plot it on graph ?

    • one year ago
  3. hartnn
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    first find, what is y=...? when x=0 and u get a point like (0,b)

    • one year ago
  4. julliemyers
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    i think its c

    • one year ago
  5. julliemyers
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    http://www.wolframalpha.com/input/?i=y+%3D+5%282%29%5Ex

    • one year ago
  6. hartnn
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    oh, can u use wolf ?

    • one year ago
  7. abb0t
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    pick a few points for x to get a y-value plot on a graph.

    • one year ago
  8. hartnn
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    you will get the y-intercept if u put x=0

    • one year ago
  9. hartnn
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    u know what that means ? you get a point where the graph cuts y-axis.

    • one year ago
  10. julliemyers
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    when i put x=o i get y=5 on wolf

    • one year ago
  11. hartnn
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    so, the y-intercept is (0,5) which eliminates b,c choices

    • one year ago
  12. hartnn
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    right ?

    • one year ago
  13. S0fw0N
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    • one year ago
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  14. julliemyers
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    i thought it was c 0.0

    • one year ago
  15. hartnn
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    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.

    • one year ago
  16. julliemyers
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    its A i just turned it and its a

    • one year ago
  17. hartnn
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    turned it ?

    • one year ago
  18. julliemyers
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    yea the graph they had on wolf was C but if u turn it its A and its (1,5)

    • one year ago
  19. hartnn
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    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....

    • one year ago
  20. agent0smith
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    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.

    • one year ago
  21. julliemyers
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    the awsner was A, i got a 90%

    • one year ago
  22. agent0smith
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    a is correct :) you can also plot graphs on google btw. Just type in 5(2)^x and hit enter.

    • one year ago
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