Quarter I-Third Summative Test in Mathematics 8

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_____ 15. Describe the trend of the graph of the equation ???? = 10. A. The graph is a vertical line. B. The graph is a horizontal line. C. The graph is increasing from left to right. D. The graph is decreasing from left to right. _____ 16. Describe the graph of the linear equation ???? = −6. A. It is a vertical line. B. It is a horizontal line. C. It is increasing from left to right. D. It is decreasing from left to right. _____ 17. Which of these linear equations represents the graph? 2 A. ???? = 3???? – 2 C. ???? = 3 ???? + 3 2 B. ???? = −3???? – 2 D. ???? = − 3 ???? − 3 1 _____ 18. What is the graph of the linear equation that has a slope of ? 2 A. The graph is a vertical line. B. The graph is a horizontal line. C. The graph is increasing from left to right. D. The graph is decreasing from left to right. _____ 19. You are asked by your teacher to graph the linear equation whose slope and a point are given. What will you do first? A. Plot the given point. C. Use the slope to identify the rise and the run. B. Draw a line passing the points. D. From the given point, count out the rise and run. _____ 20. Jap was tasked by his math 8 teacher to identify the slopes of the equations written on the board. The equations are: 3???? – 8???? = 9, −3???? + ???? = 9; and 5???? – 3???? = 0. What could be the answers of Jap? 3 5 3 5 3 3 3 3 A. , 3 ???????????? B. , − 3 ???????????? − C. , 3 ???????????? D. − , −3 ???????????? − 8 3 8 3 8 5 8 5 _____ 21. What are the intercepts of the linear equation whose graph is shown at the right? A. ???? − ????????????????????????????????????: 2; ???? − ????????????????????????????????????: −4 B. ???? − ????????????????????????????????????: 4; ???? − ????????????????????????????????????: −2 C. ???? − ????????????????????????????????????: −2; ???? − ????????????????????????????????????: −4 D. ???? − ????????????????????????????????????: −4; ???? − ????????????????????????????????????: −2 _____ 22. Which of the following shows the graph of a line whose slope is −2 and contains the point (4, −1)? A. B. C. D. _____ 23. What does the graph look like if the ???? and ????- intercepts of the linear equation are (4,0) and (0,5), respectively? A. B. C. D.