Unit 1
Trapezoid WKRP was translated 4 units to the left and 5 units up on a coordinate grid to create trapezoid W'K'R'P'. Which rule describes this transformation?
A (x y, ) → (x − 4, y + 5)
B (x y, ) → (x + 4, y − 5)
C (x y, ) → (x + 4, y + 5)
D (x y, ) → (x − 4, y − 5)
What is
A (x y, ) → (x − 4, y + 5)
Which is Not a Function?
A {(1,1),(2,3),(3,4),(7,2)}
B {(1,1),(9,1),(8,1),(7,1)}
C {(1,1),(2,3),(1,4),(7,2)}
D {(1,1),(14,3),(87,4),(10,2)}
What is
C {(1,1),(2,3),(1,4),(7,2)}
A water tank currently contains 275 gallons of water. The amount of water in the tank will decrease at a constant rate of 15 gallons per week.
Which function can be used to find t, the total number of gallons of water in the tank after w weeks?
F t = 15w − 275
G t = −15w + 275
H t = 275w − 15
J t = −275w + 15
G t = −15w + 275
Triangle XYZ is rotated 90° clockwise about the origin to form triangle X Y′ ′Z′.
Which statement is true?
F The sum of the angle measures of triangle XYZ is 90° less than the sum of the angle measures of triangle X'Y′Z'.
G The angle measures of triangle XYZ are less than the corresponding angle measures of triangle X'Y′Z' .
H Triangle XYZ is not congruent to triangle X'Y′Z' .
J The area of triangle XYZ is equal to the area of triangle X'Y′Z' .
J The area of triangle XYZ is equal to the area of triangle X'Y′Z' .
A bowling ball shaped like a sphere has a diameter of 21.6 centimeters. Which measurement is closest to the volume of the bowling ball in cubic centimeters?
A 1,954.3
B 5,276.7
C 488.6
D 42,213.4
What is
B 5,276.7
A figure was transformed on a coordinate grid using the rule ( , x y) → ( − x, −y). Which of the following describes this transformation?
F A reflection across the x-axis
G A reflection across the y-axis
H A 90° clockwise rotation about the origin
J A 180° clockwise rotation about the origin
What is
J A 180° clockwise rotation about the origin
A transformation is applied to a figure to create a new figure on a coordinate grid. Which transformation does NOT preserve congruence?
F A rotation of 270° counterclockwise
G A reflection across the y-axis
H A dilation by a scale factor of 1.5
J A translation of 50 units down
What is
H A dilation by a scale factor of 1.5
A college has two classrooms of students.
• Classroom A had 70 students.
• Classroom B had 30 students.
• Classroom A sent groups of 4 students to Classroom B until both classrooms had the same number of students.
The equation shown can be used to find the number of groups that Classroom A sent to Classroom B so each classroom had the same number of students.
70 − 4x = 30 + 4x
How many groups did Classroom A send to Classroom B?
What is
5
The diameter of a cylinder is 2.5 inches, and the height is 7.5 inches. Which equation can be used to find V, the volume of the cylinder in cubic inches?
F V = π(2.5)^2 (7.5)
G V = π(7.5)^2 (2.5)
H V = π(1.25)^2 (7.5)
J V = π(3.75)^2 (2.5)
What is
H)V = π(1.25)^2 (7.5)
26 A linear function is represented on the coordinate grid. What is the y-intercept of the graph of this function?
0,5
4,2
3,7
A) 3
B) 5
C) 6
D) 0,5
What is
B) 5