Maths-
General
Easy

Question


The graph of the equation y = mx + b, where m and b are constants, is shown in the xy-plane. What is the value of m ?

The correct answer is: 1.5


    The slope of line passing through (x1, y1) and (x2, y2) is
    m equals fraction numerator y subscript 2 minus y subscript 1 over denominator x subscript 2 minus x subscript 1 end fraction
    Here, x1 = - 2 ; y1 = - 1 ; x2 = 0 and y2 = 2
    m = fraction numerator y subscript 2 minus y subscript 1 over denominator x subscript 2 minus x subscript 1 end fraction equals fraction numerator 2 plus 1 over denominator 0 plus 2 end fraction equals space 3 over 2 space left parenthesis o r right parenthesis space 1.5

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