Chapter 2 Test

LEVEL THREE Always, Sometimes, or Never True? 14+3x-7=7x+7-4x

Always

Find Domain/ Range, Determine Functionality (2,1) (-4,5) (1,7) (2,-3) (-1,2)

Domain: 2,-4,1,-1 Range: 1,2,7,-3,2 Function: No, domains repeat

When y=2 and x=6, find y when x=¾

Function rule: y=x/3 y=.25

8+6x-10=10x+11-4x

Never

12. x: 6,9,15 y:11,14,20

No

Parallel to y=3/2x+½ and thru (4,1)

idk

Solve the Function 6(x-4)+3x=10x+11-4x

x=2

LEVEL FOUR Golf balls must be within G balls of 300. Write compound inequality and an absolute value equation for an acceptable number of balls(b) in each box.

|b-300|≤6

-10≤2x-4<6

-3≤x, x<5; Closed dot pointing left, open dot pointing right

The diameter of a tree varies directly with age. A 15 year old tree has a 3.75 inch diameter. When will the tree have a 25 inch diameter?

100 years old

Solve, graph on line: 8≤2+2k

3≤k, Solid dot pointing right

Solve T=4u/E for U

U= ET/4

Does y vary directly with x? If so, write function rule 11. x: 3,5,8 y: 12,20,32

Yes, y=4x

Solve S= 5r²t for t

t= S/5r²

9x-5<-41 3x+13>7

x<-4, x>-2; Open dots pointing outwards

9-2x>5

x<2, Open dot pointing left

3|4x+3|-3= 6

x=0; x=-3/2

2 |14-4x|=4x+4

x=2, x=8

Solve Absolute Value |2x-1|=3

x=2; x=1

Solve: x-0.9=3

x=3.9

Solve Compound Inequality, Graph on Number Line 4x+3≥-17 and 7x-4≤10

x≥-5, x≤2; Solid dots pointing inwards

|2x+4|≥22

x≥9, x≤-13; Closed dots pointing outwards

Solve: -5y-9=-(y-1)

y= -5/2

Solve: -2y-4= 8-y

y=-12

Graph 4x-3y=-12

y=4/3x-4