Find the coordinates of the midpoint P between S(-5,7) and T(3,9).

If the slope of a line L1 is -3/4, what is the slope of line L2 parallel to L1?  What is the slope of line L3 perpendicular to L1?  (Use decimal values for fractional answers, round-off up to 2 decimal places.)

Answer: Slope of L2 =       Slope of L3 =
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1 Answer

Slope of L2 is also -¾ (-0.75). Slope of L3=4/3 (1.33). 

Midpoint of S and T=((-5+3)/2,(7+9)/2)=(-1,8).

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