Precalc0108to0109-page7

Precalc0108to0109-page7 - () (Section 1.8: x = f y ) 1.8.7...

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(Section 1.8: x = fy () ) 1.8.7 The “coordinate shift method” from Section 1.4, Part F still applies: Example 2 (Coordinate Shifting and Intercepts) We will translate the parabola on the left so that its turning point (its vertex ) is moved from 0, 0 to ± 4, 1 ; that is, it is moved 4 units to the left and 1 unit up . Graph of x = y 2 Graph of x + 4 = y ± 1 2 , or x = y ± 1 2 ± 4 Look at the graph on the right. As usual, • To find the x -intercept , substitute y = 0 into an equation, and solve for x .
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