7) Obtain the equation of the line containing
the point
(i) (2,3) and parallel to the X-axis.
(ii) (2,4) and perpendicular to the Y-axis.
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Answer:
Parallel lines have the same slope.
The x-axis is simply a horizontal
line: y=0
The same as y = 0x + 0
The slope is zero
Any parallel line will also have a slope
of zero and be of the form y = c
where c is a number
The line passing through (2,-3) parallel
to the x-axis is
y = -3
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