CCSS.Math.Content.HSA.REI.B.4

How many x-intercepts will the equation: 8x^2 = + 8x - 2 have?

• 1
• 2
• 3
• none

Tags

CCSS.Math.Content.HSA.REI.B.4

Convert x²-6x+9 to factored form and identify the solution.

• (x-3)(x-3); x=3
• (x+3)(x+3); x=-3
• (x+4)(x+2); x=-4, -2
• Not factorable

Tags

CCSS.Math.Content.HSA.REI.B.4

Solve for the values of x:
(x - 3)(x + 6) = 0

• { -3, -6 }
• { 3, -6 }
• { -3, -6 }
• { 3, 6 }

Tags

CCSS.Math.Content.HSA.REI.B.4

Identify the a, b and c values for this equation:
3x² - 8x + 15 = 0

• a=3, b=8, c=0
• a=3, b=-8, c=15
• a=3, b=8, c=15

Tags

CCSS.Math.Content.HSA.REI.B.4

Determine the vertex of the parabola:
y = 5x² - 20x + 13

• (5, -7)
• (-2, -7)
• (2, -7)
• (-7, -2)

Tags

CCSS.Math.Content.HSA.REI.B.4

What is the vertex of the graph?

• (2, 4)
• (3, -1)
• (0, 8)
• (4, 2)

Tags

CCSS.Math.Content.HSA.REI.B.4

The discriminant is

• ax²  + bx  +  c
• - b/2a
• b² - 4ac
• b² + 4ac

Tags

CCSS.Math.Content.HSA.REI.B.4

You jump off a 24 foot high cliff and your fall is modeled by the function:

h(t) = -16t² + 8t + 24

How long would it take you to hit the water?

• 8 seconds

• 1 second

• 1.5 seconds

• 1/4 second

Tags

CCSS.Math.Content.HSA.REI.B.4

1 What does the discriminant tell us?

• The maximum or minimum

• The y-intercept

• The number and type of solutions

• The axis of symmetry

Tags

CCSS.Math.Content.HSA.REI.B.4

Solve.

2x² = 3x + 2

• x = 1, x = -1

• x = -1/2, x = 2

• x = 1/2, x = 2

• x = 1/2, x = 1

Tags

CCSS.Math.Content.HSA.REI.B.4