The function f(x) = x + 2 is a simple linear equation. In this equation, f(x) represents the output value, while x is the input value. The equation indicates that for any input x , the output will be x increased by 2. This means if you plug in a number, you just add 2 to it to find the result. Graphically, this function can be represented as a straight line on a coordinate plane. The line has a slope of 1, meaning it rises one unit for every one unit it moves to the right. The y-intercept, where the line crosses the y-axis, is at the point (0, 2), indicating that when x = 0 , f(x) = 2 .