Lesson 9-3: Use Similar Triangles to Determine Slope — Practice Questions

1. 1. A line passes through the points $(-2, 5)$ and $(4, 5)$. The slope of this line is ___.

2. 2. A line passes through the points $(6, -3)$ and $(6, 8)$. Which statement best describes this line?

   • A. It is a horizontal line with a slope of 0.
   • B. It is a vertical line with a slope of 0.
   • C. It is a horizontal line with an undefined slope.
   • D. It is a vertical line with an undefined slope.

3. 3. Which of the following statements is always true for any horizontal line?

   • A. Its slope is 1.
   • B. Its slope is 0.
   • C. Its slope is undefined.
   • D. Its slope depends on the y-intercept.

4. 4. What is the slope of the line that contains the points $(-1, 0)$ and $(-1, 7)$? If the slope is not a number, write 'undefined'. The slope is ___.

5. 5. Which pair of points defines a line with a slope of 0?

   • A. (2, 4) and (4, 2)
   • B. (3, 5) and (3, 9)
   • C. (-1, 6) and (5, 6)
   • D. (0, 0) and (1, 1)

6. 6. A line passes through the points $(2, 3)$ and $(5, 9)$. What is the slope of the line?

   • A. 2
   • B. -2
   • C. $\frac{1}{2}$
   • D. 3

7. 7. Find the slope of a line that passes through the points $(1, 8)$ and $(3, 4)$. The slope is ___.

8. 8. What is the slope of the line connecting the points $(-4, 2)$ and $(4, 6)$?

   • A. $\frac{1}{2}$
   • B. 2
   • C. $-\frac{1}{2}$
   • D. -2

9. 9. A line is drawn on a graph connecting the points $(1, 5)$ and $(4, 3)$. The slope of the line is ___.

10. 10. If the 'rise' between two points on a line is 6 and the 'run' is -2, what is the slope of the line?

    • A. 3
    • B. -3
    • C. $\frac{1}{3}$
    • D. $-\frac{1}{3}$