the co-ordinates of point 'p' on a number line is -3. find the co-ordinates of point on the same number line which are 5 units away from 'p'
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the co-ordinates of point 'p' on a number line is -3. find the co-ordinates of point on the same number line which are 5 units away from 'p'
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Step-by-step explanation:
On the coordinate plane every point is named by an ordered pair. For points on the x-axis the pair is in the form (x, 0).
The two points are (a, 0) and (b, 0). If "d" is the distance between them:
d2 = (a - b)2 + (0 - 0)2
d2 = (a - b)2
Both sides are positive numbers. Yet a - b need not be a positive number (square a negative get a positive!).
Therefore d = |a - b|.
Answer:
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