Learning Task 2 without graphing tell whether the graphs of the system of equations are parallel, perpendicular,intersecting or coinc

Question

Learning Task 2 without graphing tell whether the graphs of the system of equations are parallel, perpendicular,intersecting or coinciding
1.y = x + 7 and y = – x + 2
2.Y = 5x and y = 5x – 1
3. 2x + y = 1 and 2y + 4x = 2
4. Y = 2x + 3 and y = -x – 4​

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Khang Minh 4 years 2021-08-28T01:13:33+00:00 1 Answers 268 views 0

Answers ( )

  1. thienan
    1
    2021-08-28T01:14:56+00:00
    Reply

    Answer:

    1.Perpendicular

    2. Parallel

    3. Parallel

    4.

    Step-by-step explanation:

    If two lines are parallel, slope is equal

    If perpendicular, product of slopes is -1

    y = mx + c is the general equation of a line form

    m represents slope

    1. slope is -1 and 1, they are perpendicular

    2. Slope is 5 in both cases, they are parallel

    3. slope is equal; equation ii is same as i if rewritten

    They are parallel

    4.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )