Question

A graph shows the proportional relationship between the number of test questions a student gets correct, x, and the student’s test score, y. The ordered pair (1,5/4) is on the graph. What does the y- coordinate of the ordered pair represent in this relationship.

Answer 1

• The y-coordinate is 5/4, it represents a test score for one correct answer

Explanation:

Proportional relationship is:

• y = kx, where k is coefficient of proportion.

We have the ordered pair (1, 5/4), which represents:

• 5/4 = k*1
• k = 5/4

When x = 1, the y- coordinate is equal to the coefficient of proportionality.

In this case it represents a score for one correct answer.