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alassen

  • 2 years ago

Choose the system of equations which matches the following graph. MULTIPLE CHOICE

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  1. alassen
    • 2 years ago
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    5x + 2y = –14 7x + y = 7 5x + 2y = –14 7x – y = 7 5x – 2y = –14 7x + y = 7 5x – 2y = –14 7x – y = 7

  2. nphuongsun93
    • 2 years ago
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    i would change all the equations to the standard slope form y = mx + b (where m is the slope and b is the y intercept) both the lines cut y-axis at -7 so look for the one that have y intercept = -7

  3. alassen
    • 2 years ago
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    y = 5/2x - 7 y = 7x + 7

  4. alassen
    • 2 years ago
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    y = 5/2x - 7 y = -7x - 7

  5. alassen
    • 2 years ago
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    y = -5/2x + 7 y = 7x + 7

  6. nphuongsun93
    • 2 years ago
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    for the first one it shuold be y = -5x/2 - 7 y = -7x + 7

  7. alassen
    • 2 years ago
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    y = -5/2x + 7 y = -7x - 7

  8. nphuongsun93
    • 2 years ago
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    the 2nd one should be y = -5x/2 - 7 y = 7x -7 you got the signs all wrong o.O

  9. nphuongsun93
    • 2 years ago
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    3rd one: y = 5x/2 + 7 y = 7x + 7

  10. alassen
    • 2 years ago
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    mannn

  11. nphuongsun93
    • 2 years ago
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    haha, anyway 4th one y = 5x/2 + 7 y = 7x - 7 now look at all 4, see which one have y-intercept = -7 (hint: y = mx + b, b is the y-intercept)

  12. alassen
    • 2 years ago
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    i believe the answer is B

  13. alassen
    • 2 years ago
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    because both equations have a y intercept of -7 and on the graph the two lines intersect at 0,7

  14. nphuongsun93
    • 2 years ago
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    ya. intersect at (0, -7) be careful with the signs next time :P b is correct

  15. alassen
    • 2 years ago
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    thank you!

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