Vertex and Intercept Form Review

Vertex and Intercept Form Review

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Multiple Choice

How can you tell whether a parabola opens up or opens down by looking at the equation?

• The vertex tells you the direction of the opening

• The value of "a" tells you the direction of the opening.

• All parabolas open upward

• All parabolas open downward

Multiple Choice

What are the zeros for the function

f(x) = (x + 7)(x + 5)

• (7 , 0) and (5 , 0)

• (0 , 7) and (0 , 5)

• (-7 , 0) and (-5 , 0)

• (7 , 0) and (5 , 0)

Multiple Choice

Name the x-intercept(s)?

• (0, 0)

• (2, 4)

• (0, 0) and (0, 4)

• (0, 0) and (4, 0)

Multiple Choice

Which graph has the x intercepts of -2 and 1?

• y = (x-2)(x-1)

• y = (x+2)(x+1)

• y = (x+2)(x-1)

• y= (x+1)(x-2)

Multiple Choice

Which is an x-intercept of the function?

• undefined

• 1

• 2

• -1

Multiple Choice

Which is a zero of the graph?

• 0

• -1

• 1.5

• -3

Multiple Choice

What is another name for the x-intercepts of a quadratic?

• y-intercept
• Zeros
• x-axis
• They don't have another name

Multiple Choice

Which function has a translation of 7 units down and reflects over the x-axis?

• f(x) = - (x - 7)² + 1

• f(x) = (x + 7)² + 1

• f(x) = - (x - 1)² - 7

• f(x) = (x + 1)² - 7

Multiple Choice

Which function has a translation of 2 units right and a vertical stretch by a factor of 5?

• f(x)= 5(x - 2)²
• f(x) = 5(x + 2)²
• f(x) = (x - 2)² - 5
• f(x) = (x + 2)² + 5

Multiple Choice

The graph of a quadratic function is called a

• Parabola

• Vertex

• Axis of Symmetry

• Roots

Multiple Choice

What is the vertex?

• (-1,-2)
• (-2,-1)
• (-3,-1)
• (2,1)

Multiple Choice

Which equation has a vertex of (-3, 4)?

• y = 2(x+3)² + 4

• y = (x + 3)² - 4

• y = (x - 3)² + 4

• y = 2(x - 3)² + 4

Multiple Choice

What is the green dashed line called?

• roots or x-intercepts

• parabola

• axis of symmetry

• line of dashes

Multiple Choice

Identify the vertex and whether the graph opens up or down.

• (5, 2); opens up

• (5, 2); opens down

• (-5, 2); opens up

• (-5, 2); opens down

Multiple Choice

What is the equation of this graph?

• f(x) = (x - 5)² + 1

• f(x) = (x - 1)² - 5

• f(x) = (x + 1)² - 5

• f(x) = (x + 5)² + 1

Multiple Choice

The axis of symmetry line passes through which point?

• y-intercept

• any random point

• vertex

• symmetrical point for the vertex

Multiple Choice

If given the equation

y = 3(x + 5)² - 4,

what is the vertex of the parabola?

• (5, -4)

• (-5, -4)

• (-15, -4)

• (15, -4)