I hope this graph helps
Can someone please help me with and explain this?
1 answer:
Answer:
A
Step-by-step explanation:
Point R is (1, 5).
The transformation (<em>x</em> + 1, <em>y </em>- 1) denotes a translation of one unit to the right and one unit downwards.
Simply add one to the <em>x-</em>coordinate and subtract one to the <em>y-</em>coordinate of R. Hence:
Next, we want to dilate RUST by a scale factor of three. Since the dilation is centered on the origin, we can simply multiply each coordinate by three. This yields:
Our answer is A.
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Answer: The ball hits the ground at 5 s
Step-by-step explanation:
The question seems incomplete and there is not enough data. However, we can work with the following function to understand this problem:
(1)
Where models the height of the ball in meters and
the time.
Now, let's find the time when the ball Sara kicked hits the ground (this is when
):
(2)
Rearranging the equation:
(3)
Dividing both sides of the equation by :
(4)
This quadratic equation can be written in the form , and can be solved with the following formula:
(5)
Where:
Substituting the known values:
(6)
Solving we have the following result:
This means the ball hit the ground 5 seconds after it was kicked by Sara.