Question

7_Math_Unit 2_OLA 20-21 Question: 1-6 Sara claims that the number of pages she has read in her book is proportional to the number of minutes that she has spent reading. She collects several data points to prove her claim and expresses points as (x, y) coordinate pairs Which of the following actions could Sara take to prove her claim? Select two that apply. -Place the coordinate pairs in a table and show that they create equivalent ratios -Use the coordinate pairs to show that an equation of the form y+ x + c can be written - List out the coordinate pairs and show that each y value is a multiple of its associated x-value - Plot the coordinate pairs on a graph and show that the points make a straight line through the origin

Answer 1

Step-by-step explanation:

A proportional relation between to variables means that each variable is a multiple of the other. They follow this equation:

`y=kx`

Where k is called the constant of proportionality. For every coordinate pair the constant k is the same. In other words, the ratio is constant

Also, the graph of a proportional relation is always a straight line through the origin.

Answers:

• Place the coordinate pairs in a table and show that they create equivalent ratios.

,

• Plot the coordinate pairs on a graph and show that the points make a straight line through the origin.