Final answer:
Point A represents the fraction -1/3.
Step-by-step explanation:
On the number line, point A is 1 mark to the left of 0, which means it is a negative value. The number line goes from negative 1 to positive 1, with 3 equal spaces between each number. So, we need to determine what fraction represents the point 1 mark to the left of 0.
Since there are 3 equal spaces between each number, we can divide the number line into thirds. Point A is 1 mark to the left of 0, which means it is 1/3 of the negative side of the number line. Therefore, the fraction represented by point A is -1/3.