00:01
So we have, this is 0 for the first one, y equal to f of x.
00:13
And this is 4, this is minus 4.
00:20
And we have, so now for f of 2x.
00:42
So for this, we have y equal to a, x plus b.
00:49
And with x equal 0, y equal 0, and so b equal 0, and x equal to minus 4, y equal to 4.
01:02
So a equal to minus 1.
01:05
So we have f of x equal to minus x.
01:12
So f of 2x equal to minus 2x.
01:16
So now the graph of f of 2x will be x, y, minus, with x equal to minus 1.
01:34
So y equal to 2.
01:40
So it will be this graph.
01:44
X equal to minus 4.
01:47
So y equal to 8.
01:55
And this is the graph in red that we have to find.
02:03
And so for other question, with the question b, the graph y equal to gx.
02:12
And we have the graph is minus 2, minus 2, and minus 4.
02:29
So it continue going to minus 4.
03:02
And this 2.
03:21
So for from minus 4 to minus 2, we have y equal to a, x plus b.
03:43
We have 4 minus, when x equal minus 4, we have y equal 2, a minus 4, plus b...