Question

Based on the lesson, which of the following would be the best approach for solving this system by substitution? x-y=0 x-y-2=0

Answer 1

Answer:

No solution

Step-by-step explanation:

Which is easier to solve for either x or y?  x-y=0 or x-y-2=0

I'd choose the first equation.  It yields x = y.  Subbing x for y in the 2nd equation yields x - x = 2.  Unfortunately, we have a situation here that has no solution, since 0 = 2 is never true.

Answer 2

The answer is no solution