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anonymous

  • one year ago

Need help for test tomorrow solve please Solve the system by substitution or elimination. Write the answer from the smallest x value to the largest. ie (-2, 5) (3, -4) (7, 2) -x - y + 3 = 0 x2 - 4x + 7 = y

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  1. steve816
    • one year ago
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    I'll give you help! Why don't you go to sleep so you can focus during the test :)

  2. anonymous
    • one year ago
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    Thank you

  3. steve816
    • one year ago
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    No problem!

  4. anonymous
    • one year ago
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    Can you also answer this Solve the system by substitution or elimination. Write the answer from the smallest x value to the largest. ie (-2, 5) (3, -4) (7, 2) x - 2y = 0 3x - y2 = 0

  5. LynFran
    • one year ago
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    multiply eq1 by -3 we get -3x+6y=0 3x-y^2=0 add the 2 equations 6y-y^2=0 y(6-y)=0 y=0 and y=6 sub y=0 and or y=6 in eq1 x-2y=0 x-2(6)=0 x=12 when x=12 y=6 (12, 6) x-2(0)=0 x=0 when x=0 y=0 (0,0)

  6. anonymous
    • one year ago
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    Thank you can you also solve the first equation

  7. LynFran
    • one year ago
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    ok

  8. steve816
    • one year ago
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    Wow, great explanation @LynFran You are really great with math :)

  9. LynFran
    • one year ago
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    -x-y+3=0 x^2-4x+7=y rewrite eq1 to -x+3=y now equate the 2 equations we get x^2-4x+7=-x+3 x^2-4x+x=3-7 x^2-3x=-4 (x- 1.5)^2=-4+2.25 (x-1.5)^2=-1.75 ....................please check ur equation to make sure its correctly type..im getting nowhere with this..

  10. anonymous
    • one year ago
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    -x - y + 3 = 0 x2 - 4x + 7 = y This is it

  11. anonymous
    • one year ago
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    Can u help me on this You are upset with your satellite TV provider and choose to build your own parabolic satellite dish. You want the dish to be 12 inches across. You want the maximum height of the dish to be 7 feet. What is the value of "a" in the parabolic equation for the dish?

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