Find the value of y if distance between points A (2,-2) and B (-1, y)is 5.
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Answered by
6
Step-by-step explanation:
distamce between two points (x1,y1) and (x2,y2)
5²=/(x1 - x2 ) ² + ( y1 - y2 )²
5²=/ ( 2 - (-1)) ² + (( -2) - y2)²
5²= / ( 3)² + (2+y2)²
5²=/9+ (2+y2)²
(2+y2)² = 25 -9
2+y2 =/ 16
=4 -2 =2
y2 = 2
Answered by
9
Answer:
y = -6 ; y = 2
Step-by-step explanation:
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