Question

Answer choices:
A. {3}
B. {1}
C. {-1,3}
D. {0,2}

Answer 1

B

Explanation:

locate f(x) = - 1 on the y- axis

Move across horizontally until meeting the graph at (1, - 1 ) with x- coordinate x = 1

Thus x = 1 when f(x) = - 1