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anonymous

  • one year ago

I Will Medal And Fan! I need explanation AND answer! hold on.. let me put the graph up

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  1. anonymous
    • one year ago
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    |dw:1440015007670:dw|

  2. anonymous
    • one year ago
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    don't judge, that took me ages

  3. Vocaloid
    • one year ago
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    well, if our equation is y = x^3, then all we need to do is do a few quick calculations and draw a few points if x = 0, then y = x^3 = ?

  4. anonymous
    • one year ago
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    i don't get x ^ 3 = ? what is ^

  5. Vocaloid
    • one year ago
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    ^ means exponent so y = x^3 = x*x*x

  6. Vocaloid
    • one year ago
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    I presume that your equation looks like this? |dw:1440016180277:dw|

  7. anonymous
    • one year ago
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    it looks like |dw:1440016208739:dw|

  8. Vocaloid
    • one year ago
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    oh, ok, then let's go with that if x = 0, then y = 3x = ?

  9. anonymous
    • one year ago
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    y = 3x is the part I don't get

  10. anonymous
    • one year ago
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    3(0)

  11. Vocaloid
    • one year ago
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    well, when we want to graph a point, we need (x,y), right? y = 3x tells us how to find y when we have x

  12. Vocaloid
    • one year ago
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    yes, y = 3(0) = 0 when x = 0 this gives us the point (0,0)

  13. Vocaloid
    • one year ago
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    now, when x = 1, y = 3x = ?

  14. anonymous
    • one year ago
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    3(1)

  15. Vocaloid
    • one year ago
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    right, and 3(1) = 3, correct? this gives us the point (1,3)

  16. Vocaloid
    • one year ago
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    now, let's put (0,0) and (1,3) on your graph:

  17. Vocaloid
    • one year ago
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    |dw:1440016450097:dw|

  18. Vocaloid
    • one year ago
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    now we draw a straight line through the two points, and then we have our line.|dw:1440016477564:dw|

  19. Vocaloid
    • one year ago
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    is that clear?

  20. anonymous
    • one year ago
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    Not quite. sorry it took me awhile, my dogs were fighting

  21. Vocaloid
    • one year ago
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    well, let's go from the top do you understand how to graph points?

  22. Vocaloid
    • one year ago
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    for example, if I told you to put the point (3,5) on a graph, could you do it?

  23. anonymous
    • one year ago
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    yes

  24. Vocaloid
    • one year ago
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    ok, you understand that every point has an x and y-coordinate, correct? every point looks like this: (x,y) where x = a number and y = a number, with me so far?

  25. anonymous
    • one year ago
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    yes

  26. Vocaloid
    • one year ago
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    ok, now let's move on to turning an equation into a graph the problem gives you the equation y = 3x which means that we can pick any number to be x, and get a matching y value by multiplying 3*x so, if x = 0, then y = ?

  27. anonymous
    • one year ago
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    0?

  28. anonymous
    • one year ago
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    3(0)

  29. anonymous
    • one year ago
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    @Vocaloid

  30. Vocaloid
    • one year ago
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    right, y = 0 when x = 0 remember how we write a point? we can write x = 0 and y = 0 as (0,0) and graph this point

  31. Vocaloid
    • one year ago
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    next, we can pick another x value, let's just go with x = 1 as an example when x = 1, y = ?

  32. anonymous
    • one year ago
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    @Vocaloid

  33. Vocaloid
    • one year ago
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    yeah?

  34. Vocaloid
    • one year ago
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    when x = 1, y = ?

  35. anonymous
    • one year ago
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    idk why it did that. It glitched and sent it again >.<

  36. anonymous
    • one year ago
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    3(1)

  37. Vocaloid
    • one year ago
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    right, and 3 times 1 = ?

  38. anonymous
    • one year ago
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    3*

  39. Vocaloid
    • one year ago
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    right, so y = 3 when x = 1 we can write this as (1,3). so we have two points now, (0,0) and (1,3). draw these two points on a graph, then draw a straight line through them, like so:

  40. Vocaloid
    • one year ago
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    |dw:1440018952660:dw|

  41. anonymous
    • one year ago
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    oh

  42. Vocaloid
    • one year ago
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    does that make a bit more sense now?

  43. anonymous
    • one year ago
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    Why those numbers?

  44. Vocaloid
    • one year ago
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    @theforgottendogs remember when we solved the equations? x = 0, y = 0 x = 1, y = 3 and we made the two points (0,0) and (1,3)?

  45. Vocaloid
    • one year ago
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    I just picked x = 0 and x = 1 because they were easy to calculate, you can pick any 2 x values you want

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