y=4x-3

y=-2x+9

1 answer

To find the point of intersection of the two lines given by the equations \( y = 4x - 3 \) and \( y = -2x + 9 \), we can set the right-hand sides of the equations equal to each other since they are both equal to \( y \).

So we set:

\[ 4x - 3 = -2x + 9 \]

Now, we can solve for \( x \):

  1. Add \( 2x \) to both sides: \[ 4x + 2x - 3 = 9 \] \[ 6x - 3 = 9 \]

  2. Add \( 3 \) to both sides: \[ 6x = 12 \]

  3. Divide by \( 6 \): \[ x = 2 \]

Now that we have the value of \( x \), we can substitute it back into either of the original equations to find \( y \). We'll use the first equation \( y = 4x - 3 \):

\[ y = 4(2) - 3 \] \[ y = 8 - 3 \] \[ y = 5 \]

Thus, the point of intersection of the two lines is:

\[ \boxed{(2, 5)} \]

You can also verify by substituting \( x = 2 \) into the second equation \( y = -2x + 9 \):

\[ y = -2(2) + 9 \] \[ y = -4 + 9 \] \[ y = 5 \]

Hence, the intersection point \( (2, 5) \) is confirmed.