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anonymous

  • one year ago

The graph of the equation y=-2x+5 will intersect the y-axis when y equals what value?

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  1. butterflydreamer
    • one year ago
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    do you mean y = -2x - 5 as your equation? :)

  2. anonymous
    • one year ago
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    sorry i ment y=-2x+5

  3. anonymous
    • one year ago
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    An axis is intersected when the other parameter is zero.

  4. anonymous
    • one year ago
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    i think of these as "Y" dont we begin "5"

  5. anonymous
    • one year ago
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    so ur line starts at +5

  6. butterflydreamer
    • one year ago
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    oh okay :) So we have the equation y = -2x + 5 To find when it will intersect the y-axis, it meant when will it cut the y-axis? Note the slope-intercept form: y = mx + b where m = slope and b = y-intercept :) So what will the "b" be in your equation y = -2x + 5 ?

  7. anonymous
    • one year ago
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    @GrinningShadow sometimes it's better to explain the method so they can learn a method instead of just getting the answer

  8. butterflydreamer
    • one year ago
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    |dw:1433054492174:dw|

  9. butterflydreamer
    • one year ago
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    are you still confused? :) Another method to find the y-intercept is that... we know the y-intercept occurs when x = 0. Therefore for your equation y = -2x + 5. Plug in x = 0 (this means where you see "x" in the equation, replace it with 0) and we get: y = -2(0) + 5 y = ? ^This will be your y-intercept

  10. anonymous
    • one year ago
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    got it thanks @butterflydreamer

  11. butterflydreamer
    • one year ago
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    oh excellent :) No worries!!

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