Question

6. Give the detailed steps you would take to enter the following equation in your graphingcalculator. Then provide a table of values using the table feature of your graphingcalculator.2x + y = 4

Answer 1

We have to solve this equation:

`2x+y=4`

We have two variables and one equation that is linear.

We can make a table by giving values to x and then calculating the corresponding value of y.

Then, first we have to clear y from the equation.

We can do this as:

`\begin{gathered} 2x+y=4 \\ y=4-2x \end{gathered}`

Then, we can calculate 3 points to make a table of values.

In a calculator, we have to press the keys '4', '-', '2', 'x' and the value we assigned to x.

For example if we start with x = 0, we would press: 4, -, 2, x, 0, = and obtain the value of y that correspond to x = 0.

We than can complete the table as:

x | y

-----|------

0 | 4

1 | 2

2 | 0

We can assign another values to x and obtain new values of y.