Math

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A line has y-intercept (0, 3) and is perpendicular to the line 2x + y = 3. Find the x-intercept of the line.

  • Math -

    since the given line has slope -2, we want slope 1/2.


    So, y = x/2 + b
    Since when x=0, y=3, b=3 and

    y = x/2 + 3

    So, when y=0, x=?

  • Math -

    So would the answer be 6 or 3 then

  • Math -

    Neither, it would be -6

    taking Steve's equation of y= x/2 + 3 , and letting y = 0
    0 = x/2 + 3
    -3 = x/2
    -6 = x

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