Matematika

Pertanyaan

perhatikan gambar
Persamaan garis p adalah

A. x+2y-13=0
B.y-2x+1=0
C.y+2x-11=0
D.x-2y+7=0
perhatikan gambar Persamaan garis p adalah A. x+2y-13=0 B.y-2x+1=0 C.y+2x-11=0 D.x-2y+7=0

1 Jawaban

  • Line Equations.

    First, find equation for q line. The equation of the line passing through two points is given by (y - y₁) / (y₂ - y₁) = (x - x₁) / (x₂ - x₁)
    x₁ = 2, y₁ = 0
    x₂ = 0, y₂ = 4
    (y - 0) / (4 - 0) = (x - 2) / (0 - 2)
    -2y = 4x - 8
    2x + y - 4 = 0

    Then, find the equation for p line. The line perpendicular equation to line ax + by + c = 0 and through point (h, k) is given by bx - ay = bh - ak.
    h = 3, k = 5
    a = 2, b = 1, c = -4
    bx - ay = bh - ak
    x - 2y = 1(3) - 2(5)
    x - 2y + 7 = 0
    Answer: D.
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