change in y = 6 - (-3) = 9
change in x = 7 -4 = 3
so d = sqrt (81 + 9) = sqrt (90)
= 3 sqrt 10
Calculate the lengths of the straight lines joining the following pairs of points, leaving your answers in surd form:
(a) A(4,-3), B(7,6).
3 answers
Yes
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