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anonymous

  • one year ago

Help!! Definate Medal!!! Which lines are perpendicular to 5x + 4y = 8? Choose all answers that are correct. 4y=-5x+4 4y= 5x + 12 5y = 4x + 15 5y = –4x – 15 My answer is 4y=-5x+4.. what do you think

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  1. anonymous
    • one year ago
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    @hero @Nnesha

  2. MrNood
    • one year ago
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    first write the equation as y = mx +b the value m is the slope of th eoriginal line all perpendicular lines will have slope = -1/m

  3. MrNood
    • one year ago
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    btw - I think your answer is incorrect...

  4. anonymous
    • one year ago
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    y = mx +b=4y=-5x+8

  5. MrNood
    • one year ago
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    you need to show some work - otherwise you can just guess all 4 until I say... what is the slope of the original line? then - what is the slope of any perpendicular line..?

  6. MrNood
    • one year ago
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    4y=-5x+8 so y= ??

  7. anonymous
    • one year ago
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    No I wasn't guessing all 4 -.-, you asked me to rewrite the equation in the formula y = mx +b so i did and i wanted you to take me from there.

  8. anonymous
    • one year ago
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    cause im kinda confused

  9. anonymous
    • one year ago
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    y=−5/4+2

  10. anonymous
    • one year ago
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    Slope is −5/4

  11. anonymous
    • one year ago
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    Y = 2 @MrNood

  12. anonymous
    • one year ago
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    but im confused from there..:(

  13. anonymous
    • one year ago
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    @Hero help please

  14. MrNood
    • one year ago
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    OK so slope of original line is -5/4 and so the slope of any perpendicular line is -1/m -1 /(-5/4) = 4/5 so which of the answer options has a slope of 4/5? (hint - the offset value i.e. the constant number does not affect the slope or answer....)

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