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anonymous

  • one year ago

what is the y intercept of the graph of 7x=3y-8

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  1. anonymous
    • one year ago
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    for finding the y intercept you have to let x=0 and then solve for y

  2. anonymous
    • one year ago
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    put it in slope intercept form

  3. anonymous
    • one year ago
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    if i divid 3 from 0 ill get 0

  4. mindblast3r
    • one year ago
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    to put it in slope intercept form you gotta add and subtract. remember you gotta when you're doing it do it to both sides.

  5. mindblast3r
    • one year ago
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    and divide and multiply

  6. anonymous
    • one year ago
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    what? divide what

  7. anonymous
    • one year ago
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    subtract what?

  8. texaschic101
    • one year ago
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    sub in 0 for x 7x = 3y - 8 7(0) = 3y - 8 0 = 3y - 8 --- subtract 3y from both sides -3y = -8 -- now divide by -3 y = -8/-3 y = 8/3

  9. mindblast3r
    • one year ago
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    |dw:1434396444087:dw|

  10. mindblast3r
    • one year ago
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    |dw:1434396563972:dw|

  11. mathstudent55
    • one year ago
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    The y-intercept is the point where the line crosses the y-axis. On the y-axis, all points have x-coordinate zero. The quickest way to do this is to replace x in the equation with zero, and solve for y. In other words, do what @mukushla suggest in the first response to this question.

  12. texaschic101
    • one year ago
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    you do not have to put it in y = mx + b form to find the y intercept,,,but you can. And if you do, the y intercept will be in the b position

  13. mindblast3r
    • one year ago
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    |dw:1434396639779:dw|

  14. mindblast3r
    • one year ago
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    y=mx + b

  15. anonymous
    • one year ago
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    y=2.3x 2.6

  16. mindblast3r
    • one year ago
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    ya.

  17. anonymous
    • one year ago
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    ok y=5.98

  18. mindblast3r
    • one year ago
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    no? how did you get that?

  19. anonymous
    • one year ago
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    i multiplyed

  20. mindblast3r
    • one year ago
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    that's not how it works.

  21. mindblast3r
    • one year ago
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    x doesn't represent multiply in algebra, "x" is a variable.

  22. anonymous
    • one year ago
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    oh i got it mixed up

  23. mindblast3r
    • one year ago
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    the y intercept is

  24. mindblast3r
    • one year ago
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    \[\frac{ 7 }{ 3}\]

  25. anonymous
    • one year ago
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    oh ok thankyou

  26. mindblast3r
    • one year ago
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    np if you have any questions ask, i can explain things down to the finest detail so you understand.

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