GG.1 Is (x, y) a solution to the system of equations?

N46
Is (4,5) a solution to this system of equations?
y=
3
4
x+2
y=
5
4
x+4

1 answer

To determine if \((4, 5)\) is a solution to the given system of equations, we need to substitute \(x = 4\) and \(y = 5\) into both equations and see if they hold true.

The given equations are:

  1. \(y = \frac{3}{4}x + 2\)
  2. \(y = \frac{5}{4}x + 4\)

Let's substitute \(x = 4\) into each equation:

For the first equation:

\[ y = \frac{3}{4}(4) + 2 \] \[ y = 3 + 2 \] \[ y = 5 \]

This means that \((4, 5)\) satisfies the first equation.

For the second equation:

\[ y = \frac{5}{4}(4) + 4 \] \[ y = 5 + 4 \] \[ y = 9 \]

This means that \((4, 5)\) does not satisfy the second equation.

Since \((4, 5)\) satisfies the first equation but not the second, \((4, 5)\) is not a solution to the system of equations.