Question 1130652

Solve the system using any method. (Simplify your answer completely. If the system is dependent, enter a general solution in terms of x and y. If there is no solution, enter NO SOLUTION.)

5x − 2y = 22
y= 5/2 x - 11
<pre>That woman's answer is WRONG!
She uses the most time-consuming and INEFFICIENT way to solve a system yet she comes up with an INCORRECT answer!

{{{matrix(2,6, 5x - 2y, "=", 22, "------", "eq", "(i)", y, "=", (5/2)x - 11, "-----", eq, "(ii)")}}}
2y = 5x - 22 ------ Multiplying eq (ii) by 2
- 5x + 2y = - 22 ------- eq (iii)
Adding eqs (iii) & (i) gives us: 0 = 0.
The system has an INFINITE NUMBER of SOLUTIONS, hence it's DEPENDENT!