Answer:
B
Step-by-step explanation:
A linear line is a line that is straight going from left to right upwards or downwards. The only one that matches this description is B.
(Linear functions are those whose graph is a straight line. A linear function has the following form. y = f(x) = a + bx. A linear function has one independent variable and one dependent variable. The independent variable is x and the dependent variable is y.)
Hope it helps!