point a has coordinates (-4 6) and b has coordinates (7 -2) find the length of ab
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let A(-4,6) & B(7,-2)
by distance formula,
AB = √( x2-x1)^2 + (y2- y1)^2
=. √ [ 7- (-4)]^2 + [(-2) - 6]^2
= √ (7+4)^2 + (-2-6)^2
=√ (11)^2 + (-8)^2
= √ 121 + 64
= √ 185
the length of ABis√185units
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