I haven't learned about increasing/decreasing intervals yet, so I'm a little confused about this. Would the interval be where the line is located? Would the decreasing interval on the first one be y=-3? Please help me! Sorry
Increasing interval = where does graph rise???
Decreasing interval = where does the graph fall ???
Note that the intervals are stated along x.....but....we look at y to determine if the graph rises or falls
And we read the graph from left to right
First one :
This graph never rises......
So....the decreasing interval is ( - inf, inf)
Increasing interval = (-2, inf) Note that when x > -2....the graph rises
Decreasing interval = (-inf, - 2) Note that when x < -2 .....the graph falls from (-inf, -2)
This graph never decreases.....we have a vertical asymptote at x = -2
So it increases from (-inf, -2) and (-2, inf)
Hope this is clear....