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SephI

  • 3 years ago

How would I graph the equation y = 4x - 7 I would go to the left seven spaces and up 4, ja?

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  1. findme
    • 3 years ago
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    from y=x, you stretch the graph by 4, which gets you y=4x, so the graph is thinner, then move the graph y=4x down by 7 to get the desired equation

  2. skullpatrol
    • 3 years ago
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    I would start at the y-intercept (0, -7), because the form of the equation is y=mx + b, where b is the y-intercept.

  3. skullpatrol
    • 3 years ago
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    |dw:1354178396794:dw|

  4. skullpatrol
    • 3 years ago
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    Now go up 4 units and to the right 1 unit because m = 4/1

  5. SephI
    • 3 years ago
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    Hmm. I see. So how would I solve the 4x - y = 7 I need to solve for y? Wouldn't I divide 4x by itself?

  6. skullpatrol
    • 3 years ago
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    When you asked to solve FOR y, it means solve with reference to y; that is, get y all alone on one side of the equation.

  7. SephI
    • 3 years ago
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    Yup, so in the equation I need to get 4x off of the right side. How would I do that? Btw, this is part 2 of the question.

  8. skullpatrol
    • 3 years ago
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    You don't "need to get 4x off of the right side" just get y alone on either side will do.

  9. SephI
    • 3 years ago
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    U huh... but I want to get it off the right side...

  10. skullpatrol
    • 3 years ago
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    Both x and y are on the LEFT-side 4x - y = 7

  11. skullpatrol
    • 3 years ago
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    |dw:1354179547858:dw|

  12. SephI
    • 3 years ago
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    Ok thanks

  13. skullpatrol
    • 3 years ago
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    |dw:1354179695390:dw|

  14. skullpatrol
    • 3 years ago
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    |dw:1354180295761:dw|

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