Answer:
it would be three
Step-by-step explanation:
Since the line is going from the top left to the bottom right, the slope is negative so A and B are possible answers.
the line crosses the y axis at -1
B is the option that ends with -1
therefore your answer is B. y = -2x - 1
x is the variable
<em>In mathematics, a variable is a symbol; in this case, X.</em>