Lesson 1.1 Change in Tandem Part A

𝑡(g) is a function where 𝑔 is the number of girls in the scout troop and 𝑡 is the number of Thin Mints sold. Which is the independent variable?

• Thin Mints sold

• the number of girls

• the number of scout troops

• the number of Thin Mints

Tags

CCSS.HSF.BF.A.1

CCSS.HSF.IF.A.1

Is the function increasing or decreasing?

• 𝑓 is increasing on the interval (3, 7) because for all 𝑎 and 𝑏 in the interval, if 𝑎 < b, then 𝑓(𝑎) < 𝑓(𝑏).

• 𝑓 is decreasing on the interval (3, 7) because for all 𝑎 and 𝑏 in the interval, if 𝑎 > b, then 𝑓(𝑎) > 𝑓(𝑏).

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.B.6

On what interval(s) is the graph concave up?

• j < x < l

• i< x < l

• g < x < i

• l < x < n

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

On what interval(s) is the graph concave down?

• i < x < l

• x < i and x > l

• g < x < k

• j < x < l

On what interval(s) is the graph increasing?

• x < h and k < x < m

• x < k

• g < x < h

• x < h and m < x < k

On what interval(s) is the graph decreasing?

• h < x < k

• x > m

• h < x < k and x > m

• h < x < j

Tags

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

Find the zeros of the function.

• x = g, x = j,

  and x = n

• x = g, x = j, x = l,

  and x = n

• f(0) = c

• f(x) = g, j, l, and m

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

CCSS.HSA.REI.D.11

Find the 𝑦-intercept of the function.

• f(0)

• x = g, x = j, x = l,

  and x = n

• y = c

• f(x) = g, j, l, and m

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7