For an art project, Kelvin cut a 4-foot piece of yarn into pieces. He then measured the length of each piece of yarn to the nearest inch. He wants to summarize the data using a histogram. Which units are the best to use to label the x- and y-axes? A
label the x-axis "Length (feet)," and label the y-axis "Pieces of Yarn"

B
label the x-axis "Pieces of Yarn," and label the y-axis "Length (feet)"

C
label the x-axis "Length (inches)," and label the y-axis "Pieces of Yarn"

D
label the x-axis "Pieces of Yarn," and label the y-axis "Length (inches)"

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.