Question

answer all 24 questions in this part. each correct answer will receive 2 credits. no p credit will be allowed. utilize the information provided for each question to determine answer. note that diagrams are not necessarily drawn to scale. for each statement or que choose the word or expression that, of those given, best completes the statement or an the question. record your answers on your separate answer sheet. s 1 the graph below represents a dog walker’s speed during his 30 - minute walk around the neighborhood. use this space for computations. (graph: speed (miles per hour) on y - axis, time (minutes) on x - axis from 0 to 30. the graph has segments: from 0 - 2, speed increases to 2; 2 - 6, speed constant at 2; 6 - 8, speed decreases to 0; 8 - 10, speed 0; 10 - 12, speed increases to 1.5; 12 - 18, speed constant at 1.5; 18 - 22, speed increases to 3; 22 - 24, speed constant at 3; 24 - 30, speed decreases to 0) which statement best describes what the dog walker was doing during the 12 - 18 minute interval of his walk? (1) he was walking at a constant rate. (2) he was increasing his speed. (3) he was decreasing his speed. (4) he was standing still.

Explanation:

Step1: Analyze the graph's 12 - 18 min interval

The graph's y - axis is speed (miles per hour) and x - axis is time (minutes). In the 12 - 18 minute interval, the speed graph is a horizontal line. A horizontal line on a speed - time graph means the speed is constant.

Step2: Evaluate each option

• Option 1: A constant speed on a speed - time graph means moving at a constant rate. This matches the horizontal line in 12 - 18 min.
• Option 2: Increasing speed would be a rising line, not horizontal.
• Option 3: Decreasing speed would be a falling line, not horizontal.
• Option 4: Standing still would mean speed = 0, but the graph has a non - zero speed here.

Answer:

1. He was walking at a constant rate.