Answer:
- A - 2
- B - 3
- C - 6
- D - 4
- E - 5
- F - 1
Step-by-step explanation:
From the statements in the problem, we think your graph looks something like the one below. It has height on the vertical axis and time on the horizontal axis.
At the left side of the graph, where time is zero, the height is 53 feet. That is the height of the rock at the time it is thrown, so we know the y-value of the y-intercept (A) tells us the rock was thrown from a height of 53 feet (2). The x-value of the y-intercept (C) is zero. That is the time the rock was thrown (6). (We start counting time from the time the rock was thrown.)
The high point on the graph is (x, y) = (4, 85). This is the vertex. The y-value of the vertex (F) tells us the maximum height of the rock is 85 ft (1). The x-value of the vertex (E) tells us the rock reached its maximum height at 4 seconds (5).
The x-axis, where y = 0, represents ground level. The x-intercept (x, y) = (10.5, 0) is where the graph meets the x-axis. So, the y-value of the x-intercept (D) represents ground level (4). The x-value of the x-intercept (B) tells us the rock was in the air for 10.5 seconds (3).
