Unit 1 & 2 Lessons Review

. What positive value of k would make the lines below parallel in the standard (x, y) coordinate plane?

kx+4y = 15

16x+ky = 10

• 16

• -8

• 8

• 4

• 0

• 2

When x = 5, for

x ² + kx − 40 = 0.

What is the value of k?

• 0

• 4

• 2

• 1

• 3

What is the value of |12−x|

if x = 15 ?

• -27

• -3

• 3

• 6

• 27

. Karli has 3 more DVDs than Jeremy. Then she bought 2 DVDs from Jeremy.

How many more DVDs does Karli have than Jeremy?

• 1

• 4

• 5

• 6

• 7

What is the y-intercept?

• (6, 0)
• (0, 6)
• (-3, 0)
• (0, -3)

What is the minimum of the red function?

• y = -1.75

• y = 1

• y = 1.5

• y = 0

Find the function's x- and y-intercepts.

• x-int (0,-3) and (0,1)

  y-int (-4,0)

• x-int (-3,0) and (1,0)

  y-int (0,-4)

• x-int (-4, 1)

  y-int (-4, ∞)

• x-int (-3,0) and (1,0)

  y-int (0,-3)

Describe the function's end behavior.

Identify the intervals where the function is positive and where it is negative.

• positive (-1, ∞) and negative (-∞, -1)

• positive nowhere and negative (-1, -4)

• positive (-∞,-3) and (1,∞) and negative (-3,1)

• positive (-∞,∞) and negative (-4,∞)