Answer:
The function notation for the equation y=2x-4 is f(x)=2x-4.
Explanation:
Function notation is a way of writing a function as an equation, where the function is represented by a letter, such as f. The input to the function is placed inside the parentheses after the function name. For example, f(x) means that we evaluate the function f at the input x.
In this case, the function f is defined as f(x)=2x-4. This means that to evaluate the function f at any input x, we simply multiply x by 2 and subtract 4.
Here are some examples of how to evaluate the function f:
f(1) = 2*1 - 4 = -2
f(2) = 2*2 - 4 = 0
f(3) = 2*3 - 4 = 2
We can also use function notation to represent the graph of the function. The graph of the function f(x)=2x-4 is a straight line with a slope of 2 and a y-intercept of -4.