Chapter 8.10, Problem 4AGP

To determine

The solution of the $y=5$ and $y=x+4$ by using the substitution method

Answer to Problem 4AGP

The solution of $y=5$ and $y=x+4$ is $x=1,y=5$

Explanation of Solution

Given:

The two eqn are as:

  $\begin{array}{l}y=5\\ y=x+4\end{array}$

Calculation:

The two eqns. are described as:

  $y=5$  .... (1)

  $y=x+4$  .... (2)

Put the value of the $y=5$ in eq. (1):

  $\begin{array}{l}y=x+4\\ 5=x+4\\ x=1\end{array}$

So, the value of $x=1$ and $y=5$ .

Conclusion:

Hence, the solution of the eqns. is $x=1$ and $y=5$ .