Question

Y =-4x – 5y = 3x- 2Is (3,7) a solution of the system?Choose 1 answer:YesNo

Answer 1

To be a solution of the system, it has to be true in both equations.

As the coordinate is (x,y), then we have to replace 3 in every x in the equations and 7 in every y in the equations.

• Equation 1

`y=-4x-5`
`7=-4\cdot3-5`
`7=-12-5`
`7=-17`

As this is NOT TRUE, then it is not a solution for this equation, and as we are looking for a solution for the system of equations, then this is not a solution.

Answer: B. No