A linear function is a function that has a constant rate
A linear function can take any of the following forms
y = mx + b
y - y1 = m(x - x1)
Ax + By = c
Where m represents the slope/rate, and b represents the initial value
The options are not clear.
So, I will give examples of a linear function
Examples are:
y = 2x + 3
2y = 5x - 2
2x + 3y = 10
Read more about linear functions at:
https://brainly.com/question/15602982