Question

find the value of Y if dist between points A(2,-2)and B(-1,Y)is 5
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Answer 1

Answer:

Step-by-step explanation:

distance=[(x2-x1)^2+(y2-y1)]^1/2

here x1=2 x2=-1 y1=-2 y2=y distance=5

5=[(-1-1)^2+(y+2)^2]^1/2

5=[4+y^2+4+4y]^1/2

squaring on both side

25=4+y^2+4+4y

y^2+4y+8-25=0

y^2+4y-17=0

apply quadratic formula now.

Hope this helps you!

Answer 2

Answer:

2 and - 6

Step-by-step explanation:

Hope that it will help u.

If answer is wrong please let me know so that I can corrrct my mistakes.