The function y = 3 + 2x is a linear function. This is because the power of the independent variable (x) is not more than one. In this case, the power of x is zero, which still falls under the definition of a linear function. The graph of a linear function is a straight line, and the equation of a linear function can be written in the form y = mx + b, where m is the slope and b is the y-intercept. In this function, the slope (m) is 2, and the y-intercept (b) is 3.
