Question

The graph of a proportional relationship passes through the points (56,72) and (7,y). Find y.

Answer 1

Answer:

y = 9

Step-by-step explanation:

Writing the equation of two ratios, we get:

7          y

------ = ------

56       72

                                                                            7*72

Taking the cross product, 7(72) = 56(y), or y = --------

                                                                               56

... which reduces to y = 72/8, or y = 9