Quadratics Basics Practice

What is the vertex of the function f(x) = a(x-h)²+ k?

• (x, y)

• (h, k)

• (-h, k)

• (h, -k)

What is the green dashed line called?

• Root or x-intercept

• Parabola

• Axis of symmetry

• y-intercept

What is the axis of symmetry for this graph?

• y=2

• x=2

• x=0

• y=0

When a=1, will the graph of f(x)= ax² + bx + c becomes narrower or wider than the graph of parent function?

• Narrower (vertical stretch)

• Wider (vertical compression)

• Stays the same

When a=-2, will the graph of f(x)= ax² + bx + c becomes narrower or wider than the graph of parent function?

• Narrower (vertical stretch)

• Wider (vertical compression)

• Stays the same

When a=-1/2, will the graph of f(x)= ax² + bx + c become narrower or wider than the graph of parent function?

• Narrower (vertical stretch)

• Wider (vertical compression)

• Stays the same

Use the quadratic formula to solve 2x² + 2x - 12?

• -2, 3

• 2, 3

• 2, -3

• -2, -3

find x for
2x²-8x-24=0

• x= 6, -2

• x= 2, -6

• x= 4, 2

• x= 2, 6

Solve using the Quadratic Formula:
x² + 4x + 3 = 0

• x = 1 and x = 3

• x = 6 and x = -2

• x = -1 and x = -3

Identify the 'b' value: y = 16x² -8x -24

• 16

• -8

• 8

• -24