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Pumpchkin

which graph represents the solution to the given system? –4x + 3y = –12 –2x + 3y = –18

  • one year ago
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  1. Pumpchkin
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    • one year ago
  2. Compassionate
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    First solve both the equations. Best to put them in y = mx+b –4x + 3y = –12 –2x + 3y = –18

    • one year ago
  3. Pumpchkin
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    y=4/3x-4 and y= -2/3x + 6

    • one year ago
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    Now you want to graph each equation.

    • one year ago
  5. Pumpchkin
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    How?

    • one year ago
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    \[y = \frac{ 4 }{ 3 }x - 4\] Graph the 4/3 first using RISE/RUN. Start at the origin (0, 0)... On the x-axis go up 4 and to the right 3. (mx is the slope) Now -4 is the y-axis. You want to start at your origin (0, 0) and go to -4 on the y-axis|dw:1358298140966:dw|

    • one year ago
  7. Pumpchkin
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    Oh ok

    • one year ago
  8. Compassionate
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    You're basically just graphing each equations separately. Pretty simple stuff. Check this out. http://www.purplemath.com/modules/systlin2.htm I have to go, bye.

    • one year ago
  9. Pumpchkin
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    Bye thanks

    • one year ago
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