Christopher is trying to make extra money on his summer vacation from school. He works two different jobs, earning $9 per hour washing cars and $12 per hour
landscaping. How much money would Christopher earn in a week in which he
worked 6 hours washing cars and 5 hours landscaping? How much money would
Christopher earn in a week in which he worked w hours washing cars and I hours
landscaping?

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.