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  1. Equation of the straight line parallel to x-axis and also 3 units below x-axis is :
    1. x = – 3
    2. y = 3
    3. y = – 3
    4. x = 3
Correct Option: C


Equation of a straight line parallel to x-axis : y = a
Here, a = – 3
∴ Equation is : y = – 3


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