A(-3, b) and B(1, b + 4) are two points. If the coordinates of the mid-point of AB are (-1, 1), then the value of b is :
-1
0
1
2
Section Formula
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Question

A(-3, b) and B(1, b + 4) are two points. If the coordinates of the mid-point of AB are (-1, 1), then the value of b is : 1. -1 2. 0 3. 1 4. 2

KnowledgeBoat · Accepted Answer

Given, Mid-point of AB = (-1, 1). By mid-point formula, (x, y) = Substituting values we get : Comparing the y-coordinates, we get : ⇒ 1 = b + 2 ⇒ b = -1. Hence, Option 1 is the correct option.

Mathematics

A(-3, b) and B(1, b + 4) are two points. If the coordinates of the mid-point of AB are (-1, 1), then the value of b is :
-1
0
1
2

Section Formula

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A(-3, b) and B(1, b + 4) are two points. If the coordinates of the mid-point of AB are (-1, 1), then the value of b is :-1012

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A(-3, b) and B(1, b + 4) are two points. If the coordinates of the mid-point of AB are (-1, 1), then the value of b is :
-1
0
1
2

If the point R(5, 7) is the mid-point of the line segment joining the points P(3, y) and Q(x, 9), then (x + y) equals:
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9
12
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