2x – 3y = 6

Which equation has the same x-intercept as the one that George solved?

2x – 3y = 8

3x = 3y – 9

4x = 12 – 5y

5x – 5y = 10

1 answer

To find the x-intercept of the equation \(2x - 3y = 6\), we set \(y = 0\) and solve for \(x\):

\[ 2x - 3(0) = 6 \implies 2x = 6 \implies x = 3. \]

Thus, the x-intercept of the given equation is \( (3, 0) \).

Next, we need to check which of the provided equations has the same x-intercept, which is \(x = 3\).

  1. For the equation \(2x - 3y = 8\):

    Setting \(y = 0\): \[ 2x - 3(0) = 8 \implies 2x = 8 \implies x = 4. \] (Different x-intercept)

  2. For the equation \(3x = 3y - 9\):

    Rearranging gives \(3x + 9 = 3y\) or \(y = x + 3\).

    Setting \(y = 0\): \[ 0 = x + 3 \implies x = -3. \] (Different x-intercept)

  3. For the equation \(4x = 12 - 5y\):

    Rearranging gives \(5y = 12 - 4x\) or \(y = \frac{12 - 4x}{5}\).

    Setting \(y = 0\): \[ 0 = 12 - 4x \implies 4x = 12 \implies x = 3. \] (Same x-intercept)

  4. For the equation \(5x - 5y = 10\):

    Rearranging gives \(5y = 5x - 10\) or \(y = x - 2\).

    Setting \(y = 0\): \[ 0 = x - 2 \implies x = 2. \] (Different x-intercept)

Among the equations evaluated, the one that has the same x-intercept as the equation \(2x - 3y = 6\) is:

\[ \boxed{4x = 12 - 5y}. \]