anonymous
  • anonymous
what is y=-7x+4 and x=-2 by substitution
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
y=-7(-2)+4 y=-10
anonymous
  • anonymous
thanks
anonymous
  • anonymous
wats 5>9+r and how would it look on a number line

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gw2011
  • gw2011
The answer is y=18. y=(-7)(-2)+4 y=14+4 y=18
anonymous
  • anonymous
is that the answer to the first or second question
anonymous
  • anonymous
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.
anonymous
  • anonymous
thank you i have another qustion
anonymous
  • anonymous
can you please help me
anonymous
  • anonymous
sorry, yea sure

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