Answer:

B. x-intercept

Explanation:

Because the y is equal to 0 means the coordinator is (1,0)x=1, y=0

The x became 1 because it didn't said in the question that the x is zero too and it means the x have value(you can change the x to any number like x=6).

Another Explanation:

A. y-intercept if y-intercept is the answer, the coordinator should be (0,1) or x=0 y=1.

C. Slope is the steepness of the line like A(5,2) B(7,2) so its not the answer.

D. Origin​ means the coordinator is (0,0) or the x and y is equal to zero.

Reminder: the first number in the parenthesis is always the x because x is first before y in alphabet.