Test Review
Moving Straight
Ahead
Investigations 1 & 3
LINEAR RELATIONSHIP?
YES OR NO
A = 5 + 0.50d
LINEAR RELATIONSHIP?
YES OR NO
T = 50 ÷ R
LINEAR RELATIONSHIP?
YES OR NO
• A shipping company charges
$10 to ship any size package,
plus an additional $4 per pound
that it weighs
LINEAR RELATIONSHIP?
YES OR NO
Miles 0 1 2 3 4 5
Cost 5 5 5 5 5 5
LINEAR RELATIONSHIP?
YES OR NO
x 0 1 2 3 4 5
y -10 -5 0 5 10 15
LINEAR RELATIONSHIP?
YES OR NO
X Y
0 5
2 7
4 10
8 14
10 19
LINEAR RELATIONSHIP?
YES OR NO
X Y
-3 -6
-2 -12
-1 -18
0 -24
1 -30
LINEAR RELATIONSHIP?
YES OR NO
LINEAR RELATIONSHIP?
YES OR NO
LINEAR RELATIONSHIP?
YES OR NO
WRITE AN EQUATION
Use H for hours and C for total charge.
1.An electrician charges $100 per hour.
C= 100H
2. A plumber charges $75 for a house call plus
$20 per hour.
C= 75 + 20H
3. A carpenter charges $350 for a job, no matter
how long it takes.
C= 350
WHICH EQUATION?
A
X Y y = 5 + 1x
1 5 B
2 8
y = 3x + 2
3 11
C
4 14
5 17 y = 2x + 3
WHICH EQUATION?
A
X Y y = 3 + 5x
-4 -7 B
0 5
y = 5 + 3x
4 17
C
8 29
12 41 y = 4 + 5x
WHICH EQUATION?
A company A
charges a $50 y = 50x + 4
set up fee for a T-
shirt logo, and B
$4.00 per T-shirt. y = 4x + 50
Let x= number T-shirts
and C
y = amount of money
y = 54x
WHICH EQUATION?
A
y = 4x + 1
B
y = -1/2x + 4
C
y = -2x + 4 y = 2x + 4
WHICH EQUATION?
A
y = 2x + -1
B
y = -1x + -1
C
y = 2x + -2 y = 2x + 1
WHICH EQUATION?
A
y = 6x
B
y=6
C
y=x+6
SOLVE
3x + 9 18 CHECK
3 (3) + 9 = 18
3x + 9 – 9 18 – 9
9 + 9 = 18
3x 9
18 = 18
3x / 3 9/3
1x 3
SOLVE
4x + 2 10x CHECK
4( 1/3) + 2 = 10 (1/3)
4x + 2 - 4x 10x – 4x
4/3 + 2 = 10/3
2 6x
4/3 + 6/3 = 10/3
2/6 6x / 6
10/3 = 10/3
1/3 1x
SOLVE
-2x + 6 24 CHECK
-2 (-9) + 6 = 24
-2x + 6 – 6 24 – 6
18 + 6 = 24
-2x 18
24 = 24
-2x / -2 18 / -2
x -9
SOLVE
2x + 7 5x – 11 CHECK
2(6) + 7 = 5(6) –11
2x + 7 – 2x 5x – 11 – 2x
12 + 7 = 30 – 11
7 3x – 11
19 = 19
7 + 11 3x – 11 + 11
18 3x
18 / 3 3x / 3
6 1x
SOLVE
3x – 11 10x – 4 CHECK
3 (-1) – 11= 10 (-1) - 4
3x – 11 – 3x 10x – 4 – 3x
-11 7x – 4 -3 – 11 = -10 - 4
-11 + 4 7x – 4 + 4 -14 = -14
-7 7x
-7 / 7 7x / 7
-1 1x
SOLVE
3(x + 2) 12 CHECK
3(2 + 2) = 12
3x + 6 12
3 (4) = 12
3x + 6 – 6 12 – 6
12 = 12
3x 6
3x / 3 6/3
1x 2