Linear and Quadratic Functions

Simplify 2(4x + 3)

• 8x + 6

• 23x + 5

• 8x + 5

• 11x

Simplify by combining like terms:

5a + 2b - 3a + 4b

• 8a + 2b + 4

• 2a + 6b

• 8ab

• 4ab + 4

Solve for r

• 3

• -3

• -10

• 10

Look at the graph. Write down the equation for the line in the form y = mx + b

• y = x + 3

• y = 4x + 3

• y = ¹/₄ x + 3

• y = - 4x + 3

Use the graph to determine the solutions.

• -1 and -3
• 1 and -3
• 1 and 3
• -1 and 3

Which value is the y-intercept?

• (-4, 0)

• (-1, -9)

• (0, -8)

• (2, 0)

What are the zeros of this graph?

• x = {-4, 2}

• (-4, 0 ) and (2, 0)

• x = {-1, 0}

• (-1, 9 ) and (0, -8)

Which value is the vertex?

• (-4, 0)

• (-1, -9)

• (0, -8)

• (2, 0)

Write the linear inequality in standard form for this situation: Ms. Savva is ordering pizzas and breadsticks for a school party and has a budget of no more than $81. An order of breadsticks costs $7 and a pizza costs $13. 

• 7x + 13y < 81
• 7x + 13y ≥ 81
• 7x + 13y ≤ 81
• 7x + 13y > 81

Fireworks are fired from the roof of a 100-foot building. The equation h = -16t² +84t + 100 models the height, h, of the fireworks at any given time, t. How high do the fireworks get? (you might find Desmos will help you!)

• 2.625

• 210

• 100

• 200

• 210.25