Question

Louis and Ricardo took a timed a reading test, and the results below show the number of words each student can read per minute which student reads at a faster rate ?

Answer 1

Louis reads faster

Explanation:

See attachment for complete question.

The table represents Louis data while the graph represents Ricardo's data.

To solve this question, we simply calculate the slope of the table/graph,

The slope (m) is calculated by:

`m=(y_2 - y_1)/(x_2 - x_1)`

For Louis:

From the table, we pick any corresponding x and y values

`(x_1,y_1) = (2,436)`

`(x_2,y_2) = (6,1308)`

`m_1 = (1308 - 436)/(6-2)`

`m_1 = (872)/(4)`

`m_1 = 218`

For Ricardo:

From the graph, we pick any corresponding x and y values

`(x_1,y_1) = (2,300)`

`(x_2,y_2) = (6,900)`

`m_2 = (900- 300)/(6-2)`

`m_2 = (600)/(4)`

`m_2 = 150`

So, we have:

Louis:
`m_1 = 218`

Which means 218 words per minutes

Ricardo:
`m_2 = 150`

Which means 150 words per minutes