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Ab¯¯¯¯¯¯ has endpoints a(2, 4) and b(8, y). if ab is 10, what is the value of y?
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Ab¯¯¯¯¯¯ has endpoints a(2, 4) and b(8, y). if ab is 10, what is the value of y?

User Busybear
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1 Answer

4 votes
10=✓(36+(y-4)²)

10=✓36+y²-8y+16

10=✓y²-8y+52

100=y²-8y+52
y²-8y-48=0

(y+4)(y-12)=0

y=-4 or y=12
User Ralitsa
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