437,617 views
2 votes
2 votes
For which of the following equations is (-3, -2) not a solution?5x +2y=-192y-3x=53x=4y-7y=1+x

User Miles Wilson
by
2.7k points

1 Answer

19 votes
19 votes

Solution

Which of the following equations is (-3, -2) not a solution?


\begin{gathered} (-3,-2) \\ x=-3,y=-2 \end{gathered}

Option A is a solution


\begin{gathered} 5x+2y=-19 \\ 5(-3)+2(-2) \\ =-15-14 \\ =-19 \end{gathered}

Option B is a solution


\begin{gathered} 2y-3x=5 \\ 2(-2)-3(-3) \\ =-4+9 \\ =5 \end{gathered}

Option C is not a solution


\begin{gathered} 3x=4y-7 \\ 3(-3)=4(-2)-7 \\ -9=-8-7 \\ -9\\e-15 \end{gathered}

Option D is a solution


\begin{gathered} y=1+x \\ -2=1-3 \\ -2=-2 \end{gathered}

Therefore Option C is not a solution

Hence the correct answer is Option C

User JPaulino
by
2.8k points