Question 953257
given:y = -x-3 ; sketch the graph
Plot (0,-3) and (-3,0)
Draw a line thru them::
{{{graph(400,400,-10,10,-10,10,-x-3)}}}
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 and determine the inverse algebrically
Ist: Interchange x and y::
x = -y-3
2nd: Solve for "y":
y = -x-3
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 verify your solution graphically
The function is its own inverse.
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Cheers,
Stan H.
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