Use the image to answer the question.

A coordinate plane with four quadrants shows the x- and y-axes ranging from negative 5 to 5 in increments of 1. A solid line and a dotted line intersect each other. The equation of the solid line is x minus 5 y equals 3. The equation of the dotted line is 3 x minus 2 y equals negative 4. The intersection of both lines is shown at negative 2 on the x-axis and negative 1 on the y-axis in quadrant 3.

Review the graphs of a system of two linear equations in two variables: x−5y=7
and 3x−2y=−4
. Find the solution to both equations.

(1 point)
The intersection point is (
).

2 answers

To find the solution to the system of equations given by the lines \( x - 5y = 7 \) and \( 3x - 2y = -4 \), we need to solve these equations simultaneously.

Step 1: Solve for \( y \) in terms of \( x \) using the first equation.

Starting with the equation:

\[ x - 5y = 7 \]

Rearranging to isolate \( y \):

\[ -5y = 7 - x \]

\[ y = \frac{x - 7}{5} \]

Step 2: Substitute \( y \) in the second equation.

Now we will substitute this expression for \( y \) into the second equation \( 3x - 2y = -4 \):

\[ 3x - 2\left(\frac{x - 7}{5}\right) = -4 \]

Step 3: Clear the fraction by multiplying the entire equation by 5.

\[ 5(3x) - 2(x - 7) = -4 \cdot 5 \]

\[ 15x - 2(x - 7) = -20 \]

Expanding the equation:

\[ 15x - 2x + 14 = -20 \]

Combining like terms:

\[ 13x + 14 = -20 \]

Step 4: Solve for \( x \).

Subtracting 14 from both sides gives:

\[ 13x = -20 - 14 \]

\[ 13x = -34 \]

Dividing by 13:

\[ x = -\frac{34}{13} \]

Step 5: Substitute \( x \) back to find \( y \).

Now substitute \( x = -\frac{34}{13} \) back into the equation for \( y \):

\[ y = \frac{-\frac{34}{13} - 7}{5} \]

Converting 7 to a fraction with a common denominator of 13:

\[ y = \frac{-\frac{34}{13} - \frac{91}{13}}{5} \]

\[ y = \frac{-\frac{125}{13}}{5} \]

\[ y = -\frac{125}{65} = -\frac{25}{13} \]

Step 6: Write the solution as an ordered pair.

Thus, the intersection point (solution to the system of equations) is:

\[ \left(-\frac{34}{13}, -\frac{25}{13}\right) \]

Final answer: The intersection point is \(\left(-\frac{34}{13}, -\frac{25}{13}\right)\).

no