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Big Ideas Math 8th Grade Chapter 4: Graphing & Writing Linear Equations Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. If the equation y = 50x + 25 represents the amount of (y) money it costs to rent a car for (x) days, how long could you rent a car for if you had 775 dollars?

Question 2 2. Which linear equation is shown below?

Question 3 3. Which pattern of numbers represents a linear equation?

Question 4 4. What are the coordinates of the x-intercept of the equation 2x - 3y = 8?

Question 5 5. Which slope intercept form equation is equivalent to the standard form equation -x + 2y = -8?

Page 2

Question 6 6.

For this equation, what is the slope?

y = mx + b

Question 7 7. If the constant of variation is 12 and y = 36, what does x equal?

Question 8 8. What is the slope of a line passing through (-5, -2) and (4, 1)?

Question 9 9. Which graph represents a linear equation?

Question 10 10. Our current line has a slope of -1/3. What is the slope of a line that is perpendicular to our line?

Page 3

Question 11 11. What is the slope of a line passing through (-3, 4) and (2, -2)?

Question 12 12. What are the coordinates of the y-intercept of the equation 5x - 3y = 2?

Question 13 13. What is the slope of a line passing through (2, 2) and (3, 5)?

Question 14 14.

What is the slope in this equation?

y - 6 = -4(x + 7)

Question 15 15. Which of the following represents a linear equation that begins at 5 and increases by 8 at each step?

Page 4

Question 16 16. Find the slope of this line: 6x + 7y = 21

Question 17 17. Find the slope of this line: y = -5x + 2

Question 18 18. We have a line with a slope of 5. What is the slope of a line that is parallel to our line?

Question 19 19. Which of the following equations shows a direct variation?

Question 20 20. For which of these line equations is the WRONG slope given?

Page 5

Question 21 21. What is the equation of the graph below?

Question 22 22. When x = 40, y = 45. If x and y vary directly, what is the constant of variation?

Question 23 23. The hotter it gets, the more people go to the beach. If there are 120 people at the beach when the temperature is 80 degrees Fahrenheit, how many people will be at the beach when the temperature is 100 degrees Fahrenheit?

Question 24 24. Find the slope of this line: 4y - x = 0

Question 25 25. Roger works at a flower shop and he notices that the more flowers people buy, the more chocolates are sold too. If Roger sells 45 chocolates when 90 flowers are sold, how many chocolates does he sell if 100 flowers are sold?

Page 6

Question 26 26.

What is the slope in this equation?

y = 2x - 1

Big Ideas Math 8th Grade Chapter 4: Graphing & Writing Linear Equations Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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