Given the equation y = 3/6x - 6. Write TWO equations of lines in slope-intercept form that are PARALLEL to the given line, y = 3/4x - 6. Then EXPLAIN how you know the equations you chose are parallel.

1 answer

To find two equations of lines that are parallel to the given line \( y = \frac{3}{4}x - 6 \), we need to keep the same slope as the original line, since parallel lines have equal slopes.

  1. Identify the slope of the given line: The slope-intercept form of a line is \( y = mx + b \), where \( m \) is the slope. From the equation \( y = \frac{3}{4}x - 6 \), we see that the slope \( m \) is \( \frac{3}{4} \).

  2. Write two parallel equations: Using the same slope \( \frac{3}{4} \), we can create two different linear equations in slope-intercept form by choosing different y-intercepts (the \( b \) value) while keeping the same slope.

    • Equation 1: Let's choose \( b = 2 \): \[ y = \frac{3}{4}x + 2 \]

    • Equation 2: Let's choose \( b = -1 \): \[ y = \frac{3}{4}x - 1 \]

  3. Verification of parallelism: Both equations \( y = \frac{3}{4}x + 2 \) and \( y = \frac{3}{4}x - 1 \) have the same slope of \( \frac{3}{4} \) as the original line. Therefore, they will never intersect, confirming that they are parallel to the given line.

Summary

The two equations of lines parallel to \( y = \frac{3}{4}x - 6 \) are:

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

These lines are parallel because they share the same slope, \( \frac{3}{4} \).