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lesson25outline

# lesson25outline - MA 153 Lesson 25 Outline Quiz...

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MA 153 Lesson 25 Outline Quiz Solutions (Practice problems for distance learning students) 1. Given a function whose graph contains the following points: () yfx = ( 3 ,4, 2 ,6, 1 ,3 −−− ) Find the points of the function ( ) 25 yf x = −+ (You do not need to graph anything) Add 2 to the x -coordinate and add 5 to the y -coordinate: New points then are: ( 1, 9 , 0,11 , 1,8 ) 2. Explain (in words) how the graph of ( ) 3 x =− compares to the graph of . = Reflect the graph of ( ) x = over the x-axis (vertical reflection) and horizontally compress the graph by a factor of 1 3 Answering of homework questions over lesson 24. Lesson 25 Parabolas (quadratic) Degree 1: is a line 5 yx =+ 1 1 Degree 2: is a parabola 2 35 yx x =+−

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1. Standard Equation : 2 () ya xh k =−+ Vertex: (, ) hk 2. Quadratic form: 2 x b xc =++ Vertex can be found one of two ways: 1) The x -coordinate of the vertex is 2 b x a =− . Substitute the x- coordinate (once known) into the equation to find the y -coordinate. OR 2) Find the x -intercepts (by factoring). The x- coordinate of the vertex is always in the

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lesson25outline - MA 153 Lesson 25 Outline Quiz...

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