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?
In this equation, the y-intercept (+ 5) represents the original height of the plant. 2x represents the amount of growth multiplied by the number of days, x.
Answer: C) the y-intercept is the starting height of the plant
Step-by-step 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.
