Which equation shows the result of substituting an expression for y from the first equation into the second equation for the given system? y is equal to x plus 5 y minus 2 x is equal to 2
Answer
A
open paren 5 minus x close paren minus 2 x is equal to 2
B
open paren x plus 5 close paren plus 2 x is equal to 2
C
open paren x plus 5 close paren minus 2 x is equal to 0
D
open paren x plus 5 close paren minus 2 x is equal to 2
Explanation
The first equation gives y = x + 5. Substitute x + 5 everywhere y appears in the second equation, y − 2x = 2, to get (x + 5) − 2x = 2. This matches the equation in choice D.
AI-written and checked against the verified answer.