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Answer:
The complete graph of [tex]f\left(x\right)=\left\{-2x:x\ge 3,\:y=-\frac{1}{3}x-5:x\le \:3\right\}[/tex] is shown below.
Step-by-step explanation:
Considering the function
[tex]f\left(x\right)=\left\{-2x:x\ge 3,\:y=-\frac{1}{3}x-5:x\le \:3\right\}[/tex]
The graph of the piece [tex]y=-2x\ \ \ \ \ \left\{x\ge3\right\}[/tex] indicates the blue line, starting at x=3. And with one unit increase in x, the value of y decreases by 2 units.
For example,
at x = 3
[tex]y = -2x[/tex]
[tex]= -2(3)[/tex]
[tex]= 6[/tex]
and
at x = 4
[tex]y = -2x[/tex]
[tex]= -2(4)[/tex]
[tex]= 8[/tex]
By comparing the slope intercept form
[tex]y=mx+b[/tex]
Here,
The slope of which is m = -2,
and the piece [tex]y=-\frac{1}{3}x-5\ \ \ \ \ \left\{x\le3\right\}[/tex] indicates the yellow line.
By comparing the slope intercept form
[tex]y=mx+b[/tex]
Here,
The complete graph of [tex]f\left(x\right)=\left\{-2x:x\ge 3,\:y=-\frac{1}{3}x-5:x\le \:3\right\}[/tex] is shown below.