Question

Determine the intervals on which the function is increasing, decreasing, and constant.
https://postimg.org/image/drh6umnzn/

Increasing x < 0; Decreasing x > 0
Increasing x > 0; Decreasing x < 0
Increasing x < 3; Decreasing x > 3
Increasing x > 3; Decreasing x < 3

Answer 1

x = 0 is the y axis. So you're looking at what the function is doing to the left of the y-axis, which is x<0. If the function going up or down?

Answer 2

up

Answer 3

It start way up above where you can't see then goes downward to the point (0,3). See that? By the way, functions are "read" from left to right, just like a book.

Answer 4

When x < 0, the function is heading down to that point. Down means decreasing. Understand that part so far?

Answer 5

yea i got u so far

Answer 6

Then when it goes through the point at (0,3), it starts to go upwards. So which of your options defines the function's behavior?

Answer 7

B right?

Answer 8

Yes! Very good!

Answer 9

Thanks man

Answer 10

Not a man, but you're welcome :)

Answer 11

oh lmao my bad