Question

A science class is tracking the progress of plant growth. The class starts the experiment with a plant five centimeters high. The

plant grows two centimeters each day. The model for plant growth 'y' is given by: y = 2x + 5. What is the meaning of the y
intercept in this equation?
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the y-intercept is the starting date
the y-intercept is two times larger than five
the y-intercept is the starting height of the plant
the y-intercept is the largest height the plant can grow

Answer 1

Answer: C) the y-intercept is the starting height of the plant

Explanation:

In the equation of a straight line, there is a slope (2) and a y intercept (5). The y intercept is where the line crosses the y axis. It is the starting point for the y values. The science class starts the experiment with the plant being 5 centimeters high and since this is the starting point/height, this is also the y intercept.

Answer 2

Answer: the y-intercept is the starting height of the plant

Explanation: