Question 1018182
f(x) = 2x -4
{{{ graph(300, 200, -6, 5, -10, 10, 2x-4)}}}
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y = 2x -4
2x = y + 4
x = (y + 4) / 2
y = (x + 4) / 2
f^-1(x) = (x + 4) / 2
{{{ graph( 300, 200, -6, 5, -10, 10, (x + 4) / 2)}}}