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y = -3x + 7 is an equation which gives us a line parallel to the line y = -3x + 1, or the line -3x - 1.

The equation given represents the slope-intercept form of the equation for a line. Slope-intercept takes the form y = mx + b. In this form the the value of m represents the slope of the line, while b represents the Y intercept. All lines with the same slope are parallel (unless they're exactly the same.) So to find a parallel line, we simply adjust the Y intercept to any value other than the one given.

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Q: What is an equation that is parallel to -3x 1 on a graph?
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