A function that makes a line when graphed is known as the linear function.
Answer: Option B.
Step-by-step explanation:
In mathematics, the term linear function refers to two distinct but related notions: In calculus and related areas, a linear function is a function whose graph is a straight line, that is a polynomial function of degree one or zero. A linear function is any function that graphs to a straight line. What this means mathematically is that the function has either one or two variables with no exponents or powers.
When graphed, a linear equation will have a straight line that has a constant slope. A linear equation will have constantly increasing y values and a straight line, while a nonlinear equation will have outputs increasing at a non-constant rate and a curved graph.