How many lines are there which are parallel to Y- axis and having a distance 3 units?
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Answer:
there are 3 lines parallel
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Given : parallel to Y- axis and having a distance 3 units from y axis
To find : number of lines
Solution:
Line parallel to y axis will be of form
x = a
Distance of line x = a from y axis ( x = 0) will be
√(a - 0)² + 0²
= √a²
= | a |
| a | = 3
=> a = ± 3
Hence x = a will be x = ± 3
so x = 3 and x = - 3
are the two lines parallel to Y- axis and having a distance 3 units from y axis
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