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The equation for line cc can be written as y=67x1y= -\frac{6}{7}x-1. Line dd is parallel to line cc and passes through (10,9)(10, -9). What is the equation of line dd?

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Q. The equation for line cc can be written as y=67x1y= -\frac{6}{7}x-1. Line dd is parallel to line cc and passes through (10,9)(10, -9). What is the equation of line dd?
  1. Understand Relationship of Slopes: Understand the relationship between the slopes of parallel lines. Parallel lines have the same slope.
  2. Identify Slope of Line c: Identify the slope of line c from its equation.\newlineThe equation of line c is given as y=67x1y = -\frac{6}{7}x - 1.\newlineThe slope (mm) of line c is the coefficient of xx, which is 67-\frac{6}{7}.
  3. Determine Slope of Line dd: Since line dd is parallel to line cc, determine the slope of line dd. The slope of line dd is the same as the slope of line cc because parallel lines have equal slopes. Therefore, the slope of line dd is also 67-\frac{6}{7}.
  4. Use Point-Slope Form: Use the point-slope form to find the equation of line dd. The point-slope form of a line is yy1=m(xx1)y - y_1 = m(x - x_1), where mm is the slope and (x1,y1)(x_1, y_1) is a point on the line. We know the slope (mm) is 67-\frac{6}{7} and the point (x1,y1)(x_1, y_1) is (10,9)(10, -9). Plug these values into the point-slope form to get the equation of line dd. y(9)=67(x10)y - (-9) = -\frac{6}{7}(x - 10)
  5. Simplify Equation to Slope-Intercept Form: Simplify the equation of line dd to slope-intercept form.y+9=67(x10)y + 9 = -\frac{6}{7}(x - 10)y+9=67x+607y + 9 = -\frac{6}{7}x + \frac{60}{7}y=67x+6079y = -\frac{6}{7}x + \frac{60}{7} - 9Convert 99 to a fraction with a denominator of 77 to combine like terms.y=67x+607637y = -\frac{6}{7}x + \frac{60}{7} - \frac{63}{7}y=67x37y = -\frac{6}{7}x - \frac{3}{7}

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