This week I learned about finding the relationship between two quantities, domain and range and the independent and dependent variables. In this lesson I struggled the most with domain and range and I’m still reviewing to understand it. In the photo above, it represents the different ways a relation can be written. These different ways include, table of values, mapping diagram, ordered pairs and a graph.

In order to know which is the dependent variable and which is the dependent variable you must know the input and output values, which is easy to determine! The input value is always on the left side of the table of values, mapping diagram and ordered pairs, and is the values on the x-axis, when looking at a graph.

There is also times when you are only given the input value and need to determine the output value with a certain equation given.

For example: y=2x-3

To find ‘y’ you would replace ‘x’ with the input value that you are given. In the photo below I provided a visual to determine the value of ‘y’ when you have an input value of 6.