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1 April, 20:00

10. Which pair of equations represents parallel lines?

y=7

x=7

y = 2x+7

y = x+7

y = 2x-7

y=-1/2-7

y = 2x + 7

y = 2x - 7

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Answers (1)
  1. 1 April, 23:25
    0
    y = 2x + 7 and y = 2x - 7

    Step-by-step explanation:

    • Parallel lines have equal slopes

    The equation of a line in slope - intercept form is

    y = mx + c (m is the slope and c the y - intercept)

    y = 2x + 7 ← is in slope - intercept form

    with slope m = 2

    y = 2x - 7 ← is in slope - intercept form

    with slope m = 2

    Thus y = 2x + 7 and y = 2x - 7 are parallel lines
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