if the coordinates of A and B are (–3,a) and (1,a+4) respectively and the mid point of AB is (–1,1) then find the value of a
Answers
Answered by
3
Answer:
Step-by-step explanation: mid point means x1+x2÷2 and y1+y2÷2
Therefore ans is a+a+4÷2=1
a= -1
Answered by
7
Answer:
a=-1 #answerwithquality #BAL
Step-by-step explanation:
A------------------P--------------------B
(-3,a) (-1,1) (1,a+4)
mid point formula P(x,y) =(x₁+x₂÷2,y₁+y₂÷2)
∴ y=(y₁+y₂)÷2
1=(a+a+4)/2
2=2a+4
2-4=2a
-2=2a
a=-1
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