Posted by chchch on Monday, July 16, 2012 at 9:49pm.
The domain of a function is the set of all possible input values which allows the function formula to work.
In this case your function are straight line.
Domain of straight line : (-infinity,infinity)
OR
all values of x
For graph find any two points eg.
x = 0
g ( x ) = 2 * 0 - 4 = 0 - 4 = - 4
x = 1
g ( x ) = 2 * 1 - 4 = 2 - 4 = - 2
OR
In google type:
function graphs online
When you see list of results click on:
rechneronline.de/function-graphs
When page be open in blue rectacangle type:
2 x - 4
Then click option : Draw
You will see graph of your function
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