Graphical Method

.How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

Use the graph to determine the solutions.

• -1 and -3
• 1 and -3
• 1 and 3
• -1 and 3

This graph presented for values, and substitute xx values to matching yy values

• x: −3 −2 −1 0 1 2 3

  y: 1 2 7 4 3 4 7 1 2​

• x: 1 2 7 4 3 4 7 1 2

  y: −3 −2 −1 0 1 2 3

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• x=0, x=-3

• (0,0), (3,0)

• x=3

• x=0, x=3

Answer explanation

• x = 0.707, x=-0.707

• x=1.6, x=-1.6

• x=0.7, x=-0.7

• x=1.58, =-1.58

Answer explanation

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Answer explanation

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Answer explanation