Chap 2 Review Direct and Inverse Variations

Translate into a variation formula:

the number of trees that can be planted per acre varies inversely as the square of the trees distance apart.

• All Real Numbers

• All Real Numbers except 0

Tags

CCSS.HSA.APR.D.7

CCSS.HSA.REI.A.2

Find the slope of the line through the points:

(15, 27) and (20, 36)

(a)  

Tags

CCSS.HSS.ID.C.7

y varies directly as the square x. If x = -5, then y = 75.

Find y when x = 8.

(a)  

Tags

CCSS.HSA.SSE.A.1

CCSS.HSA.CED.A.2

CCSS.HSA.CED.A.1

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.2

What could be the equation of the graph?

Tags

CCSS.HSA.REI.D.10

CCSS.HSA.CED.A.1

Translate into a variation formula:

The weight, w, that a bridge column can support varies directly as the fourth power of its diameter, d, and inversely as the square of its length, l.

Tags

CCSS.HSA.CED.A.2

Tags

CCSS.HSF.IF.B.6

Fill in the blank:

The number of shares you buy varies _______ as cost of each share, if you invest exactly $500.

• directly

• inversely

• neither

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

Which equation matches the graph of pairs most closely?

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Translate into a variation formula:

y varies jointly as x and the square of z.

Tags

CCSS.HSA.SSE.A.1

CCSS.HSF.BF.A.1

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3