Mathematics
Grade-8
Easy

Question

What is the slope of the line passing through points (x, y) and (p, q)?

  1. fraction numerator p minus x over denominator q minus y end fraction
  2. fraction numerator q minus y over denominator p minus x end fraction
  3. fraction numerator q minus p over denominator y minus x end fraction
  4. fraction numerator x minus y over denominator q minus p end fraction

hintHint:

The slope of a line can be defined as the change in y coordinates of any 2 points on that line corresponding to the change in the x coordinates of those 2 points. This is generally referred to as the rise to run ratio of the given line i.e. how much did the y-coordinates rise vis-a-vis how long a distance was covered by the x-coordinates.
Slope = m = rise / run = y2-y1 / x2-x1

The correct answer is: fraction numerator q minus y over denominator p minus x end fraction


    GIVEN-
    Given line passes through points (x,y) and (p,q).
    TO FIND-
    Slope of the given line.
    SOLUTION-
    We know that the given line passes through the points (x,y) and (p,q).
    Hence, x1 = x, y1 = y, x2 = p and y2 = q.
    ∴ Slope = m = y2-y1 / x2-x1
    ∴ Slope = m = (q - y) / (p - x)
    FINAL ANSWER-
    Option 'b' i.e. '(q - y) / (p - x)' is the correct answer to the given question.

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