Chapter 4 Review (Accel)

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)

Identify the vertex.

• (5, 2)

• (5, -2)

• (-5, 2)

• (-5, -2)

• ( 4 , 8 ) 

• ( -4 , -8 ) 

• ( 4 , -8 )

• ( -4 , 8 )

What is the green dashed line called?

• roots or x-intercepts
• parabola
• axis of symmetry
• line of dashes

The axis of symmetry line passes through which point?

• y-intercept
• any random point
• vertex
• symmetrical point for the vertex

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

What causes the graph of y = x² to open downward?

• multiply the x² by a fraction
• multiply the x² by a decimal
• multiply the x² by a negative number
• multiply the x² by a number greater than 1

What is the equation for axis of symmetry?

• y=3
• x=3
• x=5
• x=1

Which of the following equations matches standard form of a quadratic?

• ax + by = c
• y = a(x - h)² + k
• y = ax² + bx + c
• y = mx + b

If a parabola opens upward and has roots at (3,0) and (-9,0), what is the equation?

• y = a(x - 3)(x - 9), a > 0

• y = a(x - 3)(x + 9), a < 0

• y = a(x - 3)(x - 9), a < 0

• y = a(x - 3)(x + 9), a > 0