Question 5 (6 points) Write the equation of the line that passes through (1,3) and (-2,9)

Question

Question 5 (6 points)
Write the equation of the line that passes through (1,3) and (-2,9)

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Khoii Minh 1 year 2021-08-23T10:20:09+00:00 1 Answers 2 views 0

Answers ( )

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    2021-08-23T10:21:45+00:00

    Answer:

    y=-2x+13

    Step-by-step explanation:

    slope equation= (y2-y1)/(x2-x1)

    (9-3)/(-2-1)=(6/-3)=-2

    slope changes by a factor of -2

    y=mx+b … find b, plug in values

    9=-2(-2)+b

    9+4=b

    b=13

    CHECK

    9=-2(-2)+13

    9=-4+13

    9=9

    CORRECT

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