bry856
  • bry856
how to find RATE OF CHANGE between 2 points?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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bry856
  • bry856
such as (-4,-2) or (-2,1)
Hayleymeyer
  • Hayleymeyer
For two points at (x1,y1) and (x2,y2), respectively, the rate of change is equal to the slope of the shortest possible line segment connecting the two points. This slope can be calculated by the following equation: m = (y2-y1)/(x2-x1)
bry856
  • bry856
i dont have enough numbers though to use that equation

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bry856
  • bry856
this is what it looks like
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Hayleymeyer
  • Hayleymeyer
ohh! idk how to do that part! sowwiee <3
anonymous
  • anonymous
you do have enough points to use that equation. [-4, -2] is an interval, not a point. They're saying find the slope between the points where x = -4 and x = -2. What is the y-value when x = -4, and what is it for x = -2?
bry856
  • bry856
y= -12 when x= -4, and y= 0 when x= -2
anonymous
  • anonymous
ok. so the points are (-4, -12) and (-2, 0). \[ROC=\frac{ y _{2}-y _{1} }{ x _{2} -x _{1}}=\frac{ 0-(-12) }{ -2-(-4) }\]
bry856
  • bry856
and that equals 6 right
bry856
  • bry856
i cant get an equal answer when i try to do (-2,1)
anonymous
  • anonymous
yes it's 6. Can you show me what you did for [-2, 1]?
bry856
  • bry856
ohhh i accidentally put exponents , i now got 1
bry856
  • bry856
|dw:1433864867540:dw|
bry856
  • bry856
thank you
anonymous
  • anonymous
yes that's right. You're welcome

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