line of symmetry

Which equation would give the graph of a parabola?

• y = 2x - 3

• y = x₂ + 1

• y = x² + 4

Is the following parabola concave up or concave down?

• Concave down

• Concave up

• Neither

How can you tell whether a parabola is facing up or facing 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

If the a value is positive in the equation of y = ax² + c, which direction does the graph open?

• up

• down

• left

• right

If the a value is negative in the equation y = ax² + c , which direction does the parabola open?

• up

• down

• left

• right

The graph of y = x² + 1 could be?

• 
• 
• 
• 

What is the vertex of the graph?

• (2, 4)
• (3, -1)
• (0, 8)
• (4, 2)

What is the maximum/minimum of a parabola called?

• vertex
• point
• top
• bottom

What is the green dashed line called?

• roots or x-intercepts
• parabola
• axis of symmetry
• y intercept

What is the formula for this quadratic equation?

• y = 2(x - 2)² + 5

• y = -(x + 2)² + 4

• y = -(x - 2)² + 4

• y = (x + 2)² + 4