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11-74.
  1. Change each equation to graphing form. Sketch the graph and label each vertex and axis of symmetry. Homework Help ✎

    1. y = 2x2 + 7x – 7

    2. y = 3x2x – 8

Add 7 to both sides to isolate the x-terms.

Factor out a 2 from the x-terms.

Complete the square. Remember to add to both sides.

Simplify.

Where is the vertex? Axis of symmetry?

See part (a).