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raevenbennett

  • 3 years ago

y=-5x-6 y=-8x-6 system linear

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  1. raevenbennett
    • 3 years ago
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    @phi

  2. phi
    • 3 years ago
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    This looks like you can do the same thing as last time. can you write down the equation we have to solve?

  3. raevenbennett
    • 3 years ago
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    |dw:1352930564084:dw|

  4. phi
    • 3 years ago
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    yes, I know that. but both right hand sides equal y so they equal each other. can you write that down?

  5. raevenbennett
    • 3 years ago
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    no, i still not gettin it because its a lot to remember

  6. phi
    • 3 years ago
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    y=-5x-6 y=-8x-6 if -5x-6 equals y, you can replace y in the 2nd equation with -5x-6. Can you write that down?

  7. raevenbennett
    • 3 years ago
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    go it written down

  8. phi
    • 3 years ago
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    what do you have?

  9. raevenbennett
    • 3 years ago
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    am i doing y=-5x-6

  10. phi
    • 3 years ago
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    you have 2 equations y=-5x-6 y=-8x-6 the 1st equation says y is -5x-6 that means you can replace y in the 2nd equation with -5x-6. after you do that what is this new equation?

  11. raevenbennett
    • 3 years ago
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    -8x-6

  12. phi
    • 3 years ago
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    what happened to the other side and what happened to the = ? If we had y= A and y= SOMETHING we can replace y with A in the 2nd equation: A= SOMETHING can you use that same idea with y=-5x-6 y=-8x-6

  13. raevenbennett
    • 3 years ago
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    sorry so it would be -8x-6=-5x-6

  14. phi
    • 3 years ago
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    yes. now that you have an equation, you can find x I would start by adding +6 to both sides -8x -6+6 = -5x-6+6 can you simplify this?

  15. phi
    • 3 years ago
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    I would simplify -6+6 to 0

  16. raevenbennett
    • 3 years ago
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    okay, i go that then whats next

  17. phi
    • 3 years ago
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    what do you have so far?

  18. raevenbennett
    • 3 years ago
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    -8x+0=-5x+0

  19. phi
    • 3 years ago
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    yes and you can simplify -5x+0 , right? what do you get?

  20. raevenbennett
    • 3 years ago
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    -5or 5

  21. phi
    • 3 years ago
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    I get -8x= -5x if you add +8x to both sides you get 8x-8x = 8x-5x of course 8x - 8x is 0 (you have 8x and take away 8x, to get 0) 0= 8x-5x on the right side, you have 8x and take away 5x, what do you have left?

  22. raevenbennett
    • 3 years ago
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    @jackyluvv would you mind helping me with one more

  23. phi
    • 3 years ago
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    @jackyluvv please read the Code of Conduct

  24. jackyluvv
    • 3 years ago
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    sorry @phi if i did anything wrong

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