anonymous
  • anonymous
Can someone please help me?? Will Fan AND Medal!!! Which functions have a positive rate of change and which have a negative rate of change? Column A Column B 1. 2x − 5y = −15 2. y = −4x + 9 3. x y 2 –10 4 –16 6 –22 4. x y –3 15 –2 11 –1 7 A. positive B. negative
Mathematics
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SOLVED
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schrodinger
  • schrodinger
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xapproachesinfinity
  • xapproachesinfinity
hint: Rate of change is the slope
anonymous
  • anonymous
how do I find it?
anonymous
  • anonymous
@xapproachesinfinity

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xapproachesinfinity
  • xapproachesinfinity
if i give this kind of equation y=2x-1 what is the slope?
anonymous
  • anonymous
2?
xapproachesinfinity
  • xapproachesinfinity
yes!
anonymous
  • anonymous
so then it is positive?
xapproachesinfinity
  • xapproachesinfinity
2x-5y=15 solve for y to have the same form that one have
anonymous
  • anonymous
how?
xapproachesinfinity
  • xapproachesinfinity
well of course it is positive do you see any negaative sign there?
anonymous
  • anonymous
I was talking about the equation.
xapproachesinfinity
  • xapproachesinfinity
y=-2x+1 this has negative slope
anonymous
  • anonymous
oh
xapproachesinfinity
  • xapproachesinfinity
well how do you solve a linear equation
anonymous
  • anonymous
?
xapproachesinfinity
  • xapproachesinfinity
2x-5y=-15 what do you do to solve for y?
xapproachesinfinity
  • xapproachesinfinity
you need to solve for y to find the slope we want it to be of this form y=mx+b where m=slope and b is y intercept
anonymous
  • anonymous
oh I got it.
xapproachesinfinity
  • xapproachesinfinity
ok!
xapproachesinfinity
  • xapproachesinfinity
you gonna do the same for the other ones
xapproachesinfinity
  • xapproachesinfinity
is that a table with two columns?
xapproachesinfinity
  • xapproachesinfinity
the way you wrote it is vague
xapproachesinfinity
  • xapproachesinfinity
if you have trouble making a table take a picture of your problem and post it

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