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Linear Functions
Test Description: Review for your Test!
Instructions: Answer all questions to get your test result.
1) Which data set represents a function?
A
(2,5),(3,4),(-2,6),(2,5)
B
(2,5),(1,4),(-2,6),(1,5)
C
(2,5),(3,4),(-2,6),(1,5)
D
(-2,5),(3,4),(-2,6),(1,5)
2) What two things do you need to write the equation of a line?
A
a function and a point
B
the x-intercept and a line
C
an x and a y
D
a slope and a y-intercept
3) what does the m represent in y=mx+b
A
slope
B
a point
C
y-intercept
D
x-intercept
4) what does the b represent in y=mx+b
A
a point
B
slope
C
x-intercept
D
y-intercept
5) Which of the following answers show a way to find slope?
A
rise/run
B
all answers show a way to find slope
C
(y2-y1)/(x2-x1)
D
(change in y)/(change in x)
6) what do we look for to determine if a set of data represents a function?
A
repeats in the range
B
negative numbers
C
repeats in the domain
D
the same number appearing more than once anywhere
7) What is the slope in the equation y= -2x+3
A
-2
B
-2/3
C
3/-2
D
3
8) What is a parallel slope to line y=3/4x-5
A
-4/3
B
4/3
C
-3/4
D
3/4
9) What is the slope of a line that is perpendicular to y=3x-7
A
3
B
-3
C
1/3
D
-1/3
10) How would you find the slope of a line if you are given two points?
A
Make it up
B
(y2-y1)/(x2-x1)
C
flip and change the sign
D
use the same slope
11) what is the slope of a line that goes through the points (3,4) and (-3,2)
A
-1/3
B
1/3
C
3
D
-3
12) What is the y-intercept of the line y=-5x+10
A
5
B
-10
C
-5
D
10
13) Which point goes with the equation y= 3x-4
A
(0,4)
B
(1, 5)
C
(-2, -10)
D
(0, 2)
14) Sam baking cookies for a fund raiser. She starts out with 5 pounds of flour. Every batch of cookies takes up a half pound. Which equation represents the amount of flour Sam has as she is making cookies?
A
y=5-1/2x or y=-1/2x+5
B
y=5-2x or y=-2x+5
C
y=-1/2+5x or y=5x-1/2
D
y=1/2-5x or y=-5x+1/2
15) If f(x)=3x-4, find f(6)
A
22
B
14
C
5
D
3.3
16) Which point represents the y-intercept? (2,0),(1,5),(0,5),(10,4)
A
(2,0)
B
(10,4)
C
(1,5)
D
(0,5)
17) When graphing the equation y=2/5x - 7, I would plot the first point at:
A
-7 on the y-axis
B
7 on the x-axis
C
-7 on the x-axis
D
7 on the y-axis
18) When graphing the equation y=3/5x+2, I would plot the first point at 2 on the y-axis and
A
go up 3 and right 5
B
go up 3 and left 5
C
go up 5 and right 3
D
go down 3 and right 5
19) After determining the slope of a line that is parallel, how do I determine the y-intercept of the new equation?
A
do nothing
B
use the same y-intercept
C
flip the slope and change the sign
D
use the provided point and plug it in for x and y
20) After determining the slope for a line that is perpendicular by flipping it and changing the sign, how do I determine a new y-intercept
A
use the same y-intercept
B
use the x-intercept
C
pick a number from the point
D
use the provided point and plug it in for x and y
*select an answer for all questions
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