Lesson 10: Linear Functions Unit Test
Algebra 1 A Unit 6: Linear Functions
(Connections Academy)
1.a yes: y=1.2x
2.d no; y does not vary directly with x
3.d graph going from (-10, -5) to (10, 3)
4.d graph going from (-10, -3) to (10,9)
5.b 46/1; your car travels 46 miles in 1 hour.
6. c 1/5
7. d -3
8.c undefined
9.d y-2=3(x-5)
10.c y+6=-5/8(x+10)
11.b y-21=7(x-3)
12.b graph with line going up and down over the point -3
13.a 2x+3y=21
14.d y=5x+4
15.b perpendicular
16.c neither
17.c y-8=-2/5(x+7)
18.d the functions have the same shape. the y-intercept of y=|x| is 0, and the y-intercept of the second function is -9
19.a the graphs have the same shape. the y-intercept of y=|x| is 0, and the y-intercept of the second graph is 5
20.a the graph with a v shape where the bottom of the v is -5 on the y-axis
21.b the graph with a v shape where the bottom of the v is 4 on the x-axis
22.a positive correlation
I just want my answers checked
Please
Well I just need help with this one question. For the data in the table, does y vary directly with x? If it does write an equation for the direct variation.
x y
8 13
16 26
24 39
yes; y=5x
yes; y = 10x
yes; y = 1.625x
no; y des not vary directly with x
What did u get on the test?
To get the answer for each question, follow these steps:
1. For question 1, the answer is "a yes: y=1.2x". To find this answer, you need to analyze the given information or equation and determine if it represents a linear function.
2. For question 2, the answer is "d no; y does not vary directly with x". To find this answer, you need to understand the concept of direct variation and determine if the given information or equation satisfies that condition.
3. For question 3, the answer is "d graph going from (-10, -5) to (10, 3)". To find this answer, you need to interpret the given information or equation and graph it on a coordinate plane.
4. For question 4, the answer is "d graph going from (-10, -3) to (10, 9)". To find this answer, you need to interpret the given information or equation and graph it on a coordinate plane.
5. For question 5, the answer is "b 46/1; your car travels 46 miles in 1 hour". To find this answer, you need to determine the rate of change between two variables using the given information.
6. For question 6, the answer is "c 1/5". To find this answer, you need to understand the concept of slope and calculate it using the given information.
7. For question 7, the answer is "d -3". To find this answer, you need to solve the equation or inequality given in the question to find the value of the variable.
8. For question 8, the answer is "c undefined". To find this answer, you need to analyze the given information or equation and determine if the slope is defined or not.
9. For question 9, the answer is "d y-2=3(x-5)". To find this answer, you need to solve the equation or inequality given in the question to find the value of the variable.
10. For question 10, the answer is "c y+6=-5/8(x+10)". To find this answer, you need to solve the equation or inequality given in the question to find the value of the variable.
11. For question 11, the answer is "b y-21=7(x-3)". To find this answer, you need to solve the equation or inequality given in the question to find the value of the variable.
12. For question 12, the answer is "b graph with a line going up and down over the point -3". To find this answer, you need to interpret the given information or equation and graph it on a coordinate plane.
13. For question 13, the answer is "a 2x+3y=21". To find this answer, you need to solve the equation or inequality given in the question to find the value of the variable.
14. For question 14, the answer is "d y=5x+4". To find this answer, you need to solve the equation or inequality given in the question to find the value of the variable.
15. For question 15, the answer is "b perpendicular". To find this answer, you need to understand the concept of slope and determine if the slopes of two lines are perpendicular or not.
16. For question 16, the answer is "c neither". To find this answer, you need to understand the concept of slope and determine if the slopes of two lines are equal, perpendicular, or neither.
17. For question 17, the answer is "c y-8=-2/5(x+7)". To find this answer, you need to solve the equation or inequality given in the question to find the value of the variable.
18. For question 18, the answer is "d the functions have the same shape. the y-intercept of y=|x| is 0, and the y-intercept of the second function is -9". To find this answer, you need to compare the shape and characteristics of two functions given in the question.
19. For question 19, the answer is "a the graphs have the same shape. the y-intercept of y=|x| is 0, and the y-intercept of the second graph is 5". To find this answer, you need to compare the shape and characteristics of two graphs given in the question.
20. For question 20, the answer is "a the graph with a v shape where the bottom of the v is -5 on the y-axis". To find this answer, you need to interpret the given information or equation and graph it on a coordinate plane.
21. For question 21, the answer is "b the graph with a v shape where the bottom of the v is 4 on the x-axis". To find this answer, you need to interpret the given information or equation and graph it on a coordinate plane.
22. For question 22, the answer is "a positive correlation". To find this answer, you need to understand the concept of correlation and determine if the relationship between two variables is positive or negative.
A
D
A
C
C
A
B
D
C
B
A
A
B
C
D
A
B
D
C
A
A
C
D
B
all answers 100% on Connexus I promise <3 ^w^