Babynini
  • Babynini
Slopes of secant (cont)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Babynini
  • Babynini
Babynini
  • Babynini
do I get part b by averaging the slopes of iv and v?
Babynini
  • Babynini
@ospreytriple :) continued from the last problem

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Babynini
  • Babynini
which is 3.818382
anonymous
  • anonymous
Examine the slopes from part A. As the x-coordinate gets closer and closer to 3, the slopes seem to approach what number? Note that some of the x-coordinates in part A approach 3 from below and some approach 3 from above.
Babynini
  • Babynini
approaches 0?
anonymous
  • anonymous
No. You have slopes approaching from below of 4.444444, 4.040404, 4.004004, and 4.000400. You have slopes approaching from above of 3.636363, 3.960396, 3.996003, and 3.999600. They seem to be closing in on what number?
Babynini
  • Babynini
4
anonymous
  • anonymous
Exactly. That's the answer to part B.
anonymous
  • anonymous
And for part C, you now have the slope (4) and the coordinates of point P so you can figure out the equation of the line.
Babynini
  • Babynini
Er is the equation (part c) : y=4x-16
anonymous
  • anonymous
Correct. Excellent work.
Babynini
  • Babynini
Yay! Thanks. hrm. It says that part a.vii is wrong. I may have rounded it incorrectly o.o
anonymous
  • anonymous
Probably a rounding error. Just double check your calcs.
Babynini
  • Babynini
Yeah that was it.
Babynini
  • Babynini
Thank you :)
anonymous
  • anonymous
You're welcome.

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