Equation of a Parabola

What is the vertex of the parabola: y=2(x-3)²+4

• (3,4)

• (-3,4)

• (3, -4)

• (-3,-4)

What is the directrix of the parabola
(x - 4)² = 8(y + 3)?

• y = - 3

• x= 5

• y= - 5

• y= 2

When x is squared, the parabola opens up or down.

• True

• False

Tags

CCSS.HSF-IF.C.7A

Which equation would give the graph of a parabola?

• y = 2x - 3

• y = x₂ + 1

• y = x² + 4

Tags

CCSS.HSF-IF.C.7A

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

• up

• down

• left

• right

Tags

CCSS.HSF-IF.C.7A

What is the equation of the following graph?

• y = 2x²

• y = x² + 2

• y = x² - 2

• y = - 2x²

Tags

CCSS.HSF-IF.C.7A

The equation of the parabola is:

• y = x + 2

• y = x² + 2

• y = x - 2

• y = x² - 2

Tags

CCSS.HSF-IF.C.7A

What is the equation of this graph?

• y = - x²

• y = - x² - 3

• y = - x² + 3

• y = x² + 3

Tags

CCSS.HSF-IF.C.7A

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

• up

• down

• left

• right

Tags

CCSS.HSF-IF.C.7A