Question

Which of the following is the graph of y = |x - 3|?

Answer 1

the answer is a on my test

Explanation:

Answer 2

D

Explanation:

with this functional definition y can never have a negative value.

so, A and C are automatically out.

and then find some core points (like x = 0 and y = 0).

for x = 0 we get y = 3. ok, that fits to both B and D.

for y = 0 x must be 3.

and that leaves only D as right answer.