10.5 Parabolas Objective: Use and determine the standard and general forms of the equations of a parabolas. Graph parabolas.

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Presentation transcript:

10.5 Parabolas Objective: Use and determine the standard and general forms of the equations of a parabolas. Graph parabolas.

below

Different than Textbook Parabola Formula’s Different than Textbook or or Form of Equation y = a(x – h)2 + k x = a(y – k)2 + h Axis of Symmetry x = h y = k Vertex (h, k) Focus ℎ, 𝑘+ 1 4𝑎 ℎ+ 1 4𝑎 , 𝑘 Directrix 𝑦=𝑘− 1 4𝑎 𝑥=ℎ− 1 4𝑎 Direction of Opening up (a > 0); down (a < 0) right (a > 0); left (a < 0) Length of Latus Rectum 1 𝑎

Assignment 10.5 Practice Worksheet #1-5 (the LR on #5 is 8) 10.5 pg 659 #16, 18, 24, 26