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8 กราฟของ \( x-2 y=6 \) ตัดบนแกน \( y \) ที่จุดใด \( \begin{array}{ll}\text { ก. }(0,3) & \text { ข. }(-3,0) \\ \text { ค. }(0,-3) & \text { ง. }(3,0)\end{array} \)

Ask by Lane Owen. in Thailand
Jan 29,2025

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จุดที่กราฟ \( x - 2y = 6 \) ตัดแกน \( y \) คือ \( (0, -3) \).

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เมื่อต้องการหาจุดตัดของกราฟ \( x - 2y = 6 \) บนแกน \( y \) เราจะใช้หลักการแทนค่า \( x \) เป็น 0 ในสมการ เพื่อหาค่า \( y \) โดยแทนค่าลงไปจะได้ \( 0 - 2y = 6 \) ส่งผลให้ \( -2y = 6 \) หรือ \( y = -3 \) ซึ่งทำให้จุดตัดที่อยู่บนแกน \( y \) คือ \((0, -3)\) ดังนั้นคำตอบคือ ค. \((0, -3)\)

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