Unit 2: Transformations
Unit 3: Linear Relationships and Equations
Unit 4: Understand and Analyze Functions
Unit 5: Scatterplots
Miscellaneous
100
These 3 types of transformations preserve the size and shape of a figure:
You must name all 3 of the transformations to receive credit for this question.translations, rotations, reflections
*preserve shape and size of a figure
-a sequence of translations, reflections, and rotations create congruent figures
100
Houston is conducting a science experiment. The temperature of a substance is 20 degrees Celsius and increases at a constant rate of 3 degrees Celsius per hour. Which graph represents the relationship?
graph D!
the y intercept is 20 and there is a slope of 3
100
Which of the following relations represent y as a function of x? Briefly explain your choice.
b) only b represents y as a function of x! It is the only graph shown that passes the vertical line test!
The vertical line tests says if any vertical line intersects the graph more than once, the graph does NOT represent a function. If any vertical line intersects the graph only once, the graph does represent a function.
100
a) weak, linear, negative association
b) strong, linear, negative association
c) nonlinear, negative association
d) no association
e) strong, positive, linear association
b) strong, linear, negative association
100
What is Ms. McGuinness' favorite color?
a) pink
b) green
c) purple
d) blue
b) green
200
Which of the following pairs of dimensions could represent a triangle that is similar to triangle ABC?
a) base = 7 cm height = 9cm
b) base = 5cm height = 7cm
c) base = 12cm height = 20cm
d) base = 8cm height = 5cm
correct answer: c) base = 12cm height = 20cm
Similar triangles/shapes have proportional side lengths
Note that 3/5 = 12/20
the triangle with the base of 12cm and height of 20cm would be an enlargement of triangle ABC by a scale factor of 4
200
True or false?
The slope of segment AB is equal to the slope of segment CB
True!
Similar triangles that fall on the same line in a coordinate plane have the same slope.
200
The graph of a function is shown. Which of the following statements describes an interval of the function?
a) The function is increasing from 15 seconds to 35 seconds
b)The function is increasing from 45 seconds to 50 seconds
c) The function is decreasing from 35 seconds to 45 seconds
d) The function is decreasing from 15 seconds to 35 seconds
d) The function is decreasing from 15 seconds to 35 seconds
200
Some high school students in the U.S. take a test called the SAT before applying to colleges. The scatter plot below shows what percent of each state's college-bound graduates participated in the SAT 2009-2010, along with that state's average score on the math section. There is a cluster of states with lower participation and a cluster of states with higher participation.What is the best interpretation of these clusters?
a) the states with lower participation typically had lower math scores
b) the states with lower participation typically had higher math scores
c) the states with higher participation typically had higher math scores
b) the states with lower participation typically had higher math scores
200
In what month and year was the town of Monson made a town with representation in the legislature?
a) December, 1866
b) April, 1650
c) August, 1775
d) November, 1900
c) August, 1775
300
A transformation of triangle ABC resulted in triangle A'B'C'. Which transformation of triangle ABC resulted in it's image triangle, triangle A'B'C'.
a) reflection over the y-axis
b) reflection over the x-axis
c) rotation of 90 degrees CW about the origin
d) translation 2 units down
b) Is triangle A'B'C' congruent to triangle ABC?
b) reflection over the x-axis
yes A'B'C' is congruent!
translations, reflections, and rotations create congruent images
300
Which of the following are true? Select all that apply.
a) The graph of a proportional relationship is a straight line graph through the origin.
b) a negative number divided by a positive number is a positive number
c) Similar triangles that fall on the same line in a coordinate plane have the same slope.
options a and c are true!
option b is false. a negative number divided by a positive number is a negative number
300
DAILY DOUBLE
Does the following table represent y as a function of x? Justify your choice.
no! The input -2 has 2 outputs: 6 and 20 so the table does not represent a function!
Remember, if each input has one unique output then the relation is a function. If not, then it's not a function.
300
A group of Monson High School students took a survey about how they spend their time. They answered the survey questions based on their activities from the previous day. The scatter plot shows the relationship between the amount of time students spent outside and the amount of time they spent playing video games.
a) What type of association does the scatter plot represent?
b) Write an equation in slope intercept form to represent the line of fit shown on the scatter plot.
a) negative
b) y = (-3/5)x + 5
300
How many students attend Monson High School during this current school year?
a) 220 students
b) 280 students
c) 340 students
d) 370 students
b) 280 students
400
DAILY DOUBLE
Select all of the following sequences of transformations that would result in an image rectangle that is similar to rectangle ABCD. Select all that apply.
a) a dilation by a scale factor of 1.5 centered at the origin followed by a translation 3 units right
b) a reflection over the x-axis, followed by a rotation 90 degrees clockwise
c) a translation 3 units left and 1 unit down, followed by a dilation by a scale factor of 1/2 centered at the origin
a and c would result in a similar figure
b would result in an image that is congruent
400
What value of x makes the equation true? You must show all of your work on your whiteboard for credit.
6(x-3)=8x-14
x = -2
400
a) What is the slope of the function shown in the table?
b) What is the y-intercept of the function shown in the table?
c) Write an equation in slope intercept form to represent the linear function.
a) slope = (change in y/change in x) = 8/2 = 4
b) y-intercept = 5 (y value when x is 0)
c) equation in the form y=mx+b
y = 4x+5
400
What is Ms. McGuinness' new last name going to be after she gets married?
Cree