## How do you find slope of a tangent line?

1) Find the first derivative of f(x). 2) Plug x value of the indicated point into f ‘(x) to find the slope at x. 3) Plug x value into f(x) to find the y coordinate of the tangent point. 4) Combine the slope from step 2 and point from step 3 using the point-slope formula to find the equation for the tangent line.

**How do you find a slope in a circle?**

Plug in the x and y value of the point on the circle whose slope you wish to find. For example, if you wanted to find the slope at the point (0,4) you would plug 0 in for x and 4 in for y in the equation dy/dx = -2x / (2(y-1)), resulting in (-2_0) / (2_4) = 0, so the slope at that point is zero.

### What is the relationship between a tangent line and a circle?

A tangent to a circle is a straight line which touches the circle at only one point. This point is called the point of tangency. The tangent to a circle is perpendicular to the radius at the point of tangency.

**Can the slope of a tangent line be zero?**

The slope of a line tangent to a minimum or maximum is always 0, so our slope is zero.

## What is the slope of the line that passes through the points 5’11 and (- 9 17?

the slope would be -2 because the equation of the line would be y= -2x – 1.

**What is tangent to a straight line?**

tangent, in geometry, the tangent line to a curve at a point is that straight line that best approximates (or “clings to”) the curve near that point. It may be considered the limiting position of straight lines passing through the given point and a nearby point of the curve as the second point approaches the first.

### How do you calculate the slope of a tangent?

f ‘ ( x ).

**What does the slope of the tangent line tell us?**

The slope of a position-versus-time graph represents the velocity. Explanation: The slope of the tangent line represents the rate of change of a function. Velocity is the rate of change of position with respect to time. Equivalently, velocity is the derivative of the position function.

## What does a slope of a tangent represent?

The tangent line represents the instantaneous rate of change of the function at that one point . The slope of the tangent line at a point on the function is equal to the derivative of the function at the same point (See below.)

**How to determine the tangent line at a curve?**

Finding the equation of a line tangent to a curve at a point always comes down to the following three steps: Find the derivative and use it to determine our slope m at the point given Determine the y value of the function at the x value we are given. Plug what we’ve found into the equation of a line.