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Question:

Portia is a designer working on creating plans for the city of Geocove's new waterpark. The graph shows her plan for a waterslide for young children. The equation that represents this line is y= -1/3x + 4 The x-axis represents the ground, and the
y-axis represents one of the poles that will support the slide. Each unit on each axis represents 1 foot. Suppose that a rider coming down this slide has a horizontal change of 6 feet. What is the value of their vertical change? Explain your reasoning.

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