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Section 1.4 Straight Lines
1. Match the statement with one of the graphs.
The slope of the line is zero.
2. Match the statement with one of the graphs.
The slope of the line is undefined.
3. Match the statement with one of the graphs.
The slope of the line is positive, and its y-intercept is positive.
4. Match the statement with one of the graphs.
The slope of the line is positive, and its y-intercept is negative.
5. Find the slope of the line shown in the figure. (If an answer is undefined, enter UNDEFINED.)
6. Find the slope of the line shown in the figure. (If an answer is undefined, enter UNDEFINED.)
7. Find the slope of the line shown in the figure. (If an answer is undefined, enter UNDEFINED.)
8. Find the slope of the line shown in the figure. (If an answer is undefined, enter UNDEFINED.)
9. Find the slope of the line that passes through the pair of points.
(2,5) and (3,8)
10. Find the slope of the line that passes through the pair of points. (If an answer is undefined, enter UNDEFINED.)
(4,6) and (3,8)
11. Find the slope of the line that passes through the pair of points. (If an answer is undefined, enter UNDEFINED.)
(-3,6) and (8,9)
12. Find the slope of the line that passes through the pair of points. (If an answer is undefined, enter UNDEFINED.)
(-4,-4) and (8,-8)
13. Find an equation of the line that passes through the point and has the indicated slope m.
(4, -5); m=8
14. Find an equation of the line that passes through the point (−4, 4) and is parallel to the line 4x − 8y − 16 = 0.
Section 1.4 Straight Lines Answer
9. Find the slope of the line that passes through the pair of points.
(2,5) and (3,8)
Answer: 3