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OpenStudy (anonymous):
OpenStudy (anonymous):
@misty1212
OpenStudy (anonymous):
@campbell_st
OpenStudy (campbell_st):
the midpoint uses a formula...
but a short cut method is to average the x values and average the y values
so in the 1st question the points are
(3,2) and (5, 4)
what is the average of the x values.. what is the average of the y values in these points..?
OpenStudy (anonymous):
How do I find the average?
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OpenStudy (campbell_st):
add the 2 x values and deivde the answer by 2... same for the y values
OpenStudy (campbell_st):
oops should read divide the answer by 2
OpenStudy (anonymous):
4 and 3? @campbell_st
OpenStudy (campbell_st):
that's correct... so the 1st midpoint is (4, 3)
OpenStudy (campbell_st):
question 9 is the same process
question 10... find the slope of each line segment...
and the see if there are any pairs that multiply to -1... that means they are perpendicular.
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