High School Math : Identifying Slope at a Point

Study concepts, example questions & explanations for High School Math

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Example Questions

Example Question #1 :Calculus I — Derivatives

Find the slope of the line tangent to the-intercept of the parabola:

Possible Answers:

Correct answer:

Explanation:

To find the slope of a line tangent to a parabola at a specific point, find the derivative of the parabola's equation, then substitute the-coordinate of the specific point in the new equation.

In this case, it helps to expand the equation before taking the derivative:

Now take the derivative of the expanded equation:

Since the-intercept is the point where the-coordinate is, substituteinto the equation for.

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