
The slope of any line which is parallel to x-axis is …………. .
A.0
B.1
C.-1
D.2
Answer
525.9k+ views
Hint: In this question we are asked to find the slope of a straight line which is parallel to x-axis. But, here we didn’t get any coordinates or equations in the question. So, we will try to find it by drawing a straight line on the graph and find the slope by using formula of to get the answer.
Complete step-by-step answer:
Here, we need to find the slope of any line which is parallel to x-axis.
Let us draw a straight line AB on the graph which is parallel to x-axis.
In this graph, the horizontal line is x-axis and the vertical line is y-axis.
By drawing the straight line on the graph we get two points A and B where is A and is B .
Now, we can find the slope of the straight line parallel to the x-axis by taking A and B in the formula of slope.
i.e. .
Put, and
By this we get to know that the slope of any straight line parallel to the x-axis is 0.
Therefore, option (a) is the correct answer.
Note: Generally students get confused while solving such types of questions and they may make mistakes while taking x and y coordinates. They should know that y coordinates of the straight line parallel to x-axis will always be the same. Students can solve this problem logically. The slope of a straight line parallel to the x-axis will always be ‘0’ as there will be no slope to the straight line which is parallel to the axis.
Complete step-by-step answer:
Here, we need to find the slope of any line which is parallel to x-axis.
Let us draw a straight line AB on the graph which is parallel to x-axis.

In this graph, the horizontal line is x-axis and the vertical line is y-axis.
By drawing the straight line on the graph we get two points A and B where
Now, we can find the slope of the straight line parallel to the x-axis by taking A and B in the formula of slope.
i.e.
Put,
By this we get to know that the slope of any straight line parallel to the x-axis is 0.
Therefore, option (a) is the correct answer.
Note: Generally students get confused while solving such types of questions and they may make mistakes while taking x and y coordinates. They should know that y coordinates of the straight line parallel to x-axis will always be the same. Students can solve this problem logically. The slope of a straight line parallel to the x-axis will always be ‘0’ as there will be no slope to the straight line which is parallel to the axis.
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