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Unit 4: Linear Functions Study Guide

Total questions: 45

Worksheet time: 1hrs 21mins

Name
Class
Date
1.
What is the slope of the line with the equation y = 4x + 12
a)
4
b)
1/4
c)
-4
d)
-1/4
2.

An airplane is flying at 20,000 ft and needs to ascend up to 35,000 ft to avoid a storm that is up ahead. The plane rises at a rate of 3,000 ft per minute. Which equation shows the height H of the plane after x minutes

a)

H = 3,000x + 20,000

b)

H = 3,000x + 35,000

c)

H = 20,000x + 3,000

d)

H = 35,000x + 3,000

3.

A balloon is released from the top of a building that is 50 meters tall. The balloon rises at the rate of 4 meters per second. Which equation represents the situation?

a)

y = 4x + 50

b)

y = - 4x + 50

c)

y = 50 - 4x

d)

y = 4x - 50

4.

A swimming pool had a leak. After 2 hours it had 800 gallons in it and then after 6 hours it had gone down to 600 gallons. Which equation represents this situation?

a)

y = - 50x + 900

b)

y = - 200x + 900

c)

y = 200x

d)

y = 4x

5.

What is the m and b? (rewrite first)

6 - y = 2x

a)

m = 2 b = -6

b)

m = -2 b = 6

c)

m = -2 b = -6

d)

m = 2 b = 6

6.

What is the m and b? (rewrite first)

1/2x - 3 + y = 0

a)

m = 1/2 b = -3

b)

m = -1/2 b = 3

c)

m = 1/2 b = 3

d)

m = -1/2 b = -3

7.
Write in slope intercept form
-4x + 2y = -6
a)
y = -2x + 3
b)
y = 2x + 3
c)
y = 2x - 3
d)
y = -2x - 3
8.
Write -3x-2y=2 in slope intercept form.
a)
y = 3/2x - 1
b)
y = -3/2x - 1
c)
y = 3/2x + 1
d)
y = -3/2x + 1
9.
Write an equation of a line that passes through the point (-9,2) and is perpendicular to the line y = 3x - 12
a)
y = (-1/3)x - 1
b)
y = (1/3)x - 2
c)
y = -3x + 12
d)
y = 3x - 1
10.
Write an equation of a line that passes through the point (7,10) and is perpendicular to the line y = (1/2)x - 9
a)
y = -2x - 24
b)
y = -2x + 12
c)
y = -2x  + 24
d)
y = (1/2)x - 12
11.

Which of the following lines is PARALLEL to the graph of 5x + 2y = 8?

a)

2x + 5y = 8

b)

5x - 2y = 6

c)

-10x - 4y = 7

d)

-10x + 4y = 9

12.

Which of the following lines is PARALLEL to the graph of y = -6x + 3 and goes through the point (-1,4)?

a)

y=1/6x +25/6

b)

y = 1/6x + 4

c)

y = -6x - 2

d)

y = -6x + 4

13.

Determine the equation of the line that is PERPENDICULAR to the line 3x + 12y = 1 and contains the point (-2, 6).

a)

y = 4x + 6

b)

y = 4x + 14

c)

y = 3x + 12

d)

y = -1/4x + 11/2

14.

which of the following is a line for a vertical equation?

a)

y = x

b)

x = 5

c)

x = y + 0

d)

y = 5

15.

what statement below is not true?

a)

horizontal lines have zero slope

b)

vertical lines have undefined slope

c)

y = 7 has a zero slope

d)

x = 0 has a zero slope

16.

which of the following passes through the origin?

a)

y = 5

b)

y = 5x

c)

y = -5

d)

x = 5

17.
Vertical or horizontal?
y = -3
a)
vertical 
b)
horizontal
c)
neither
18.
Vertical or horizontal?
x = 4
a)
vertical 
b)
horizontal
c)
neither
19.
Vertical or horizontal?
y = -6
a)
vertical 
b)
horizontal
c)
neither
20.
Vertical or horizontal?
y = 2x + 3
a)
vertical 
b)
horizontal
c)
neither
21.
What is the equation of a line with a zero slope that goes through the point
(6, 7) ?
a)
x = 6
b)
x = 7
c)
y = 6
d)
y = 7
22.
What is the equation of a line with an undefined slope that goes through point
(-3,5)?
a)
x = -3
b)
x = 5
c)
y = -3
d)
y = 5
23.

Number of pets a person has and number of books a person has read

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

24.

Number of days absent from school vs. math average

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

25.

Distance traveled vs. amount of gas in the car

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

26.

Hours of studying vs. grades

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

27.
Write the equation that best matches the graph shown.
a)
y = 4x
b)
y = 4x - 3
c)
y = 4/3 x + 4
d)
y = 4/3 x - 3
28.
Write the equation of the line.
a)
y= -1x-3
b)
y= -3x-1
c)
y=(-1/3)x-1
d)
y= -3x-3
29.
Which equation represents the following graph?
a)
y = 3x + 2
b)
y = -2x + 3
c)
y = 2x + 3
d)
y = -3x + 2
30.
Which equation best represents the relationship between x and y in the table shown?
a)
y=5x + 10
b)
y=1/5x+5
c)
y= 5x+5 
d)
y=10x+5
31.
What is the slope?
a)
1/2
b)
2
c)
7
d)
3
32.
What is the slope?
a)
-21
b)
-17
c)
1/4
d)
4
33.
What is the slope?
a)
2
b)
1/2
c)
1
d)
1.5
34.

 y=27x+4y=\frac{-2}{7}x+4  and  y=72x3y=\frac{7}{2}x-3  are parallel lines

a)

True

b)

False

35.

 y=3x+2y=3x+2  and  y=3x3y=3x-3  
These lines are...

a)

the same line

b)

perpendicular

c)

neither

d)

parallel

36.

 y=23x+2y=\frac{-2}{3}x+2  and  y=32x+9y=\frac{3}{2}x+9  

a)

Parallel

b)

Perpendicular

c)

Neither

37.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
38.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
39.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
40.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
41.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
42.
What is the constant of proportionality (in miles per hour) based on the table?
a)
45
b)
90
c)
135
d)
2
43.
What is the constant of proportionality?
a)
8
b)
16
c)
24
d)
2
44.
The interest received on a savings account varies directly with the amount deposited. Daniel received $55.35 in interest on $1230 he deposited. How much interest would Daniel have received if he had deposited $2000 into his account?
a)
34.04
b)
90.00
c)
1,285.35
d)
44,444.44
45.
On a treasure map, the actual distance is directly related to the scaled distance.  If 15 miles is represented by 3 centimeters, then how many centimeters on the treasure map are equivalent to 135 miles?
a)
27 cm
b)
675 cm
c)
529 cm
d)
32 cm