How do I find the slope of the tangent line for a given x-coordinate?

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Discussion Overview

The discussion revolves around finding the slope of the tangent line to the curve defined by the equation y = x² + 4x - 1 at a specific x-coordinate of -3. The focus is on understanding the initial steps required to approach this problem, particularly in the context of calculus and derivatives.

Discussion Character

  • Homework-related
  • Conceptual clarification

Main Points Raised

  • One participant expresses confusion about how to start finding the slope of the tangent line for the given parabola at x = -3.
  • Another participant suggests determining the point on the curve corresponding to x = -3 and inquires about the participant's understanding of slopes and derivatives.
  • A participant reiterates the question, clarifying that they are seeking help specifically for finding the slope of the tangent line at x = -3 without considering perpendicular lines.
  • There is a suggestion to calculate the y-value for x = -3 and a question about the participant's familiarity with derivatives and their connection to slope.

Areas of Agreement / Disagreement

The discussion remains unresolved, with participants expressing varying levels of understanding and familiarity with the concepts involved, particularly regarding derivatives and tangent lines.

Contextual Notes

Participants have not yet established a clear method for finding the slope, and there is uncertainty about the foundational knowledge of calculus concepts among the participants.

thats.life
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Hello there. I am kind of confused about this and have no idea where to start.
FOr example:

If the line given is y=x^2+4x-1 and we are to find the slope of the tangent of the perpendicular line which passes through x-coordinate -3.


Where do I start?
 
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Figure out what point (-3, ?) you are discussing. Then, do you know how to find the slope of a curve at a point? And do you know the relation between the slopes of two lines which are perpendicular to each other?
 
Ohh I am sorry. Disregard the perpendicular part.
So what I am asking is:

How do i find the sloper of the tangent lines to the parabola y= x^2 + 4x -1 if I am only given the x-coordinate -3. That is all the information stated.

I need help from step one. I have no idea how to even approach this.
 
thats.life said:
Ohh I am sorry. Disregard the perpendicular part.
So what I am asking is:

How do i find the sloper of the tangent lines to the parabola y= x^2 + 4x -1 if I am only given the x-coordinate -3. That is all the information stated.

I need help from step one. I have no idea how to even approach this.

Well, surely you can figure out the y value for x = -3.

Are you taking a calculus course? Do you know about derivatives and their relation to slope?
 

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