Question

Determine the ratio of number of books to the cost

- 3:5
- 1:3
- 4:2
- 2:1

Hint:

### The defining property of a linear function graph is that it has a constant rate of change.

## The correct answer is: 1:3

### The graph is a linear graph, i.e. at any interval the ratio of quantities will remain same.

When x = 2, y = 6

Thus ratio of books to cost = 2:6 = 1:3

Thus, the ratio of books to cost = 1:3.

### Related Questions to study

The quantities compared in the graph are _____________

The quantities compared in the graph are _____________

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