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प्रश्न
In the figure, line l is parallel to X-axis. Which of the following statement is true?
पर्याय
The slope is zero.
The slope cannot be determined.
The slope is positive.
The slope is negative.
उत्तर
The slope is zero.
Explanation:
The slope of a line parallel to the X-axis is zero.
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Show that the points A(- 2, 5), B(2, – 3) and C(0, 1) are collinear.
Determine whether the following points are collinear. A(–1, –1), B(0, 1), C(1, 3)
Given: Points A(–1, –1), B(0, 1) and C(1, 3)
Slope of line AB = `(square - square)/(square - square) = square/square` = 2
Slope of line BC = `(square - square)/(square - square) = square/square` = 2
Slope of line AB = Slope of line BC and B is the common point.
∴ Points A, B and C are collinear.
