What Is the Equation for a Tangent Line Parallel to a Given Line?

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SUMMARY

The equation of the tangent line to the curve y = √(2x - 1) that is parallel to the line x - 3y = 16 can be determined by first finding the slope of the given line, which is 1/3. Next, the derivative of the curve, y' = 1/(√(2x - 1)), must be set equal to 1/3 to find the corresponding x-value. Substituting this x-value back into the original curve equation yields the point of tangency, which can then be used in the point-slope form y - y0 = m(x - x0) to derive the final equation of the tangent line.

PREREQUISITES
  • Understanding of derivatives and their application in finding slopes
  • Familiarity with the slope-intercept form of a line (y = mx + b)
  • Knowledge of the point-slope form of a line (y - y0 = m(x - x0))
  • Basic algebra skills for manipulating equations
NEXT STEPS
  • Study how to compute derivatives of functions, specifically using the power rule
  • Learn about parallel lines and how to determine their slopes
  • Practice converting between slope-intercept form and point-slope form
  • Explore applications of tangent lines in calculus
USEFUL FOR

Students studying calculus, particularly those learning about derivatives and tangent lines, as well as educators looking for clear explanations of these concepts.

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Homework Statement



What is the equation of the tangent line to the curve y = Sqrt( 2x - 1) where the tangent line is parallel to the line x - 3y = 16

The Attempt at a Solution



My teacher briefly mentioned to find the derivative of the given, and then plug it into the slope-y intercept formula? I got confused from there because he used y-y=m(x-x)
 
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DespicableMe said:

Homework Statement



What is the equation of the tangent line to the curve y = Sqrt( 2x - 1) where the tangent line is parallel to the line x - 3y = 16

The Attempt at a Solution



My teacher briefly mentioned to find the derivative of the given, and then plug it into the slope-y intercept formula? I got confused from there because he used y-y=m(x-x)
The slope-intercept form is often written as y = mx + b.

The point-slope form is written as y - y0 = m(x - x0). This form is useful if you know a point (x0, y0) on the line, and the slope m of the line.
 

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