Equations of a Parabola

What is the green dashed line called?

• roots or x-intercepts

• parabola

• axis of symmetry

• line of dashes

What is the axis of symmetry for this graph?

Which equation would give the graph of a parabola?

• y = 2x - 3

• y = x₂ + 1

• y = x² + 4

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

• up

• down

• left

• right

What is the equation of this graph?

• y = x² + 1

• y = - x² + 1

• y = x²

• y = - x²

What is the equation of the following graph?

• y = 2x²

• y = x² + 2

• y = x² - 2

• y = - 2x²

The equation of the parabola is:

• y = x + 2

• y = x² + 2

• y = x - 2

• y = x² - 2

What is the equation of this graph?

• y = - x²

• y = - x² - 3

• y = - x² + 3

• y = x² + 3

Which equation would result in the parabola being wider?

• y = 0.5x² + 2

• y = x²

• y = 10x² + 7

• y = - 3x² - 2

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

• up

• down

• left

• right