The odometer in a car measures the number of miles driven by the car since it was made. During a trip, the odometer reading in Anita’s car is modeled by the function y=9500+55x , where x represents the number of hours driven during the trip and y represents the odometer reading in miles. Part A What is the meaning of the rate of change in this function? The number of miles driven each hour during the trip. The number of miles driven each hour during the trip. The total number of miles driven at the beginning of the trip. The total number of miles driven at the beginning of the trip. The total number of miles driven at the end of the trip. The total number of miles driven at the end of the trip. The number of miles driven during the trip.

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.