Question

7 If (1, -1) is a point on the line 2x - (2a + 5) y = 5, then find the value of a.​

Answer 1

Step-by-step explanation:

\begin{gathered} = > 2x - (2a + 5)y = 5 \\ = > 2(1) - (2a + 5)( - 1) = 5 \\ = > 2 + 2a + 5 = 5 \\ = > 2a = - 2 \\ = > a = - 1\end{gathered}

=>2x−(2a+5)y=5

=>2(1)−(2a+5)(−1)=5

=>2+2a+5=5

=>2a=−2

=>a=−1