Answer:
440 m
Step-by-step explanation:
We are to assume that Time is measured from the beginning of Amir's drive. So the altitude at the beginning of Amir's drive is the altitude corresponding to Time = 0. That is the point at the left side of the graph where the blue line meets the vertical axis.
The number on the vertical axis at that point is 440, and the label tells us that is meters of altitude. Amir's altitude at the beginning of his drive is 440 meters.
Answer:
(0, 1/3)
Step-by-step explanation:
You find the y-intercept when the x value is 0, so plug in 0 for x and simplify
f(x) = -(2/9)(0) + 1/3
f(x) = 1/3
The y-intercept is at the point (0, 1/3)
To evaluate an expression with a given variable means to replace the number in the place of the variable, and then solve to find what the expression equals.
Example would be: x + 3 and x = 4
x + 3
4+3 = 7
7 is the value of the expression now.