A line is passing through the points (6,4) and (6,0). At what point will it intersect the y− axis?
A
(0,1)
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B
Line will meet y-axis at (0,0)
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C
Line will never meet the y−axis
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D
(1,0)
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Solution
The correct option is C Line will never meet the y−axis Concept:
Calculate the slope of the line and compare it with the y-axis.
If the slope of line is not defined, then line will never meet the y−axis.
Plot the points on the cartesian plane for better understanding.
We know that, slope of the line segment whose end point coordinates are (x1,y1) and (x2,y2) is given by y2−y1x2−x1
Here, (x1,y1)≡(6,0) (x2,y2)≡(6,4) ∴ Slope of line segment AB=4−06−6 =40=undefined
Hence, the slope of the line AB is not defined.
So, slope of y− axis is not defined.
Hence, Line AB is parallel to y− axis and will never meet with it. Option (c) is correct.