Question

Solution.Graphing would be a good method for solving the following system of equations:

Answer 1

Step 1:

Write the two equations

x = y

x + y = 4

Step 2:

Use the substitution method

substitute x = y in equation 2

Step 3

$\begin{gathered} x\text{ + y = 4} \\ \text{ y + y = 4} \\ 2y\text{ = 4} \\ \text{y = }\frac{4}{2} \\ y\text{ = 2} \end{gathered}$

Step 4:

y = 2

x = 2

Final answer

The solution is (2,2)

Graphical solution

True