Positive and Negative Intervals

What are the x-intercepts of this function?

• 0 and 2

• -4 and 0

• 2 and 3

• 0 and 4

Answer explanation

We need these in order to write intervals where it is positive or negative.

Tags

CCSS.HSF-IF.C.7A

Write the interval that represents the negative portion of the function?

• (-2,1)

• (-0.5,-3.5)

• $\left(-\infty,-2\right);\ \left(1,\infty\right)$
  

• (-3,0)

Tags

CCSS.HSF-IF.C.7A

Where is the function positive?

• Nowhere

• (0.5, 2)

• (-3, 0.5); (2, 5]

• $\left(-\infty,0.5\right)\ and\ \left(2,\infty\right)$

Tags

CCSS.HSA.APR.B.3

Where is the function positive?

• (-∞,5]

• $\left(0,\ \infty\right)$

• (-∞,2]

• (-∞,0)

Tags

CCSS.HSF-IF.C.7B

Where is the function negative?

• (-∞,1)

• (-∞,∞)

• (1,∞) and (-∞,1)

• (-1,∞)

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

Where is the function positive and where is it negative?

• positive (-2,1) and (3,∞) and negative (-∞,-2) and (1,3)

• positive (-∞,-1) and (2,∞) and negative (-1,2)

• positive (-1,4) and negative (2,-2)

• positive (∞,3) and (1,-2) and negative (3,1) and (-2,-∞)

Tags

CCSS.HSA.APR.B.3