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Plotting graphs

This content guides you through the fundamentals of plotting linear graphs and solving simultaneous equations. Learn about key concepts such as the equation of a line (y = 2x + 4) and how to find intercepts by setting variables to zero. We will also tackle simultaneous equations, providing examples like x – y = 2 and 2x – y = 6. Get practical insights on how to graph these equations and solve for unknown values. Whether you're a beginner or looking to refresh your skills, this guide is a valuable resource.

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Plotting graphs

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  1. Plotting graphs

  2. Linear graphs(x = 0, y = 0, method) Click to continue +y • y = 2x +4 • When x = 0 • y = 0 + 4 = 4 • When y = 0 • 2x + 4 = 0 • 2x = - 4 • X = - 2 0 +x -x -y

  3. Click to continue Linear graphs(x = 0, y = 0, method) simultaneous equations x – y = 2 and 2x – y = 6 x – y = 2 (y=0, x = 2) ( x = 0 y = -2) 2x – y = 6 (y =0, x = 3) ( x =0, y = -6) X = 4, y = 2 2x – y = 6 X – y = 0

  4. Quadratics y = x2

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