Question

plzzz answers the last question question

Answer 1

$s = \sqrt{ { (x_{1} } - x_{2}) ^{2} + ( y_{1} - y_{2} )^{2} } \\ 10 = \sqrt{ ({10 - 2})^{2} + {(y + 3)}^{2} } \\ 100 = 64 + {(y + 3)}^{2} \\ 36 = {(y + 3)}^{2} \\ + - 6 = y + 3 \\ y = - 3 + - 6 \\ y = 3 \: or \: - 9$
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Answer 2

by distance formula,
√ (x2-x1)²+ ( y2-y1)² = 10 units
√ 8 ² +( y+3 ) ² = 10
64 + y² + 3² + 6y = 100
y² +3²+6y = 100-64
y + 3 = 6
y = 3