Babynini
  • Babynini
Slopes of secant lines.
Mathematics
katieb
  • katieb
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Babynini
  • Babynini
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Babynini
  • Babynini
anonymous
  • anonymous
Put each value of x into the function\[y=\frac{ 4 }{ 2-x }\]and calculate the corresponding y-value. Can you do that for the first one?

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Babynini
  • Babynini
= -4.44444...
Babynini
  • Babynini
so the first Q point is = (2.9, -4.44..)
anonymous
  • anonymous
Very good. So now you have the the coordinates of point Q on the secant line as (2.9, -4.444444). With point P given as (3, -4), can you calculate the slope of PQ?
Babynini
  • Babynini
4.4444444
Babynini
  • Babynini
Is that correct? :)
anonymous
  • anonymous
Recall that the slope calculation looks like\[m_{PQ} = \frac{ y_Q - y_P }{ x_Q - x_p }\]
anonymous
  • anonymous
Well done. That's correct. Now repeat these same calculations for each part of the question. Don't forget to keep six decimal places to satisfy the question.
Babynini
  • Babynini
Thank you so much!!
anonymous
  • anonymous
You're welcome.

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