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Sketching Quadratic Equations (1).avi

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Uploaded by on Apr 18, 2010

This video is a demonstration of quick sketching a quadratic equation. You will be able to find the vertex, the y-intercept, the x-intercepts, and the direction of the parabola after viewing the demonstration.

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Education

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Standard YouTube License

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Uploader Comments (FerranteMath)

  • I love you man (No homo) .....This is going to help me in my exam tomorrow!

  • @07Vikash Good luck on your exam tomorrow. Let me know if it helped.

  • If I have the quadratic x^2 - 4 would the vertex be found on the left or right of the y axis? Just getting confused with two sources telling me different things :D

  • @12308madman Hey Madman. For a quadratic that does not have a "middle" term, the vertex is always ON the y-axis. Think of x^2 - 4 as x^2 + 0x - 4. Then, if you follow my video, a = 1, b = 0, c = -4. Plug in the a, b, and c values into the formula in the video. Since the b-value is always zero, the vertex is always on the y-axis. I hope that helped! Good luck.

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All Comments (5)

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  • Why is it so quiet? I can't hear it with my speakers turned right up.

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