<em>Vertex: </em>
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<em>The vertex is the top point where it curves!</em>
<em>Which is located at: </em>
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<em>Y-intercept: </em>
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<em>The Y-intercept is when a point doesn't move or left or right and just goes up or down!</em>
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Answer:
Step-by-step explanation:
You haven't attached any graphs but as there area 3 distinct roots the graph will have 2 loops.
Also the end behaviour will be rising from the left negative values of f(x) and at the right it will rise to positive f(x).
The answer is d because the amplitude is 400, and it is decreasing by a factor of 1/2.