If we call y the height of the plane, we know when the time (x) is 0, the height is 30000. So let's write that in:
y = 30000 + (0)
Then, for every increase of a minute (x increases by 1), the height reduces by 2000. This can be written as:
y = 30000 - 2000x
Using what we know about y = mx+c equations, the slope of the line is -2000, and the y-intercept is (0, 30000).
Vertical angles have the same measure
So, 2x will be equal to x+30
2x = x+30
x = 30
24. 1.00000000
25. 2.9678900522
26. 1.1950500000000
First of all, we need to know what a function is.
A function is a binary relation between two sets that
