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anonymous

  • 5 years ago

what is y=-7x+4 and x=-2 by substitution

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  1. anonymous
    • 5 years ago
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    y=-7(-2)+4 y=-10

  2. anonymous
    • 5 years ago
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    thanks

  3. anonymous
    • 5 years ago
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    wats 5>9+r and how would it look on a number line

  4. gw2011
    • 5 years ago
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    The answer is y=18. y=(-7)(-2)+4 y=14+4 y=18

  5. anonymous
    • 5 years ago
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    is that the answer to the first or second question

  6. anonymous
    • 5 years ago
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    y=18 is the correct answer, not y=10. when you multiply 2 negatives, it will become a positive, making it +14+4=18. For your second question, 5>9+r. Simply subtract 9 from both sides making it -4>r. Then to put it on a number line, just put an open circle on x=-4 and indicate that r is everything that is smaller than than -4, so shade the number line to the left for all negative numbers less than -4.

  7. anonymous
    • 5 years ago
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    thank you i have another qustion

  8. anonymous
    • 5 years ago
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    can you please help me

  9. anonymous
    • 5 years ago
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    sorry, yea sure

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