Question

identify if (2,-5) is a solution of 2x + y = 9

Answer 1

Answer:

it's not solution for given equation

Answer 2

Given data: (2,-5) and the equation $2x+y=9$

To Find: (2,-5) is a solution for the given equation $2x+y=9$ or not

Solution:

• To find the solution for an equation, substitute the given values in the equation and simplify it.
• If the value of left hand side is equal to the right hand side, then the solution is true and given number is a solution of the given equation or else it is not true solution.
• Substitute $x=2,y=-5$ in the equation $2x+y=9$.
• $2(2)+(-5)=9$
• $4-5=9$
• $-1=9$
• The value of left hand side is not equal to right hand side, hence it is not a solution.
• Therefore, (2,-5) is not a solution of the equation $2x+y=9$.