# Determine whether the function is linear or nonlinear. The curve of the function has the points (-2, -14), (-1, -8), (0, -2) and (1, 4). If it is linear, determine the slope.

The slope of a line is defined by the change in vertical direction divided by the change in the horizontal direction. Trigonometrically, it is given by tan θ, where θ is the angle between the x-axis and the line in the anticlockwise direction.

## Answer: The given function is linear in nature, and has a slope equal to 6.

Let's understand the solution step by step in detail.

**Explanation:**

The given points on the curve of the function are (-2, -14), (-1, -8), (0, -2) and (1, 4).

To check whether the function is linear or not, we check whether the curve has a constant slope or not.

Therefore, we use the slope formula m = (y_{2} − y_{1}) / (x_{2} − x_{1}) to check whether the slope is constant.

Hence, for the first two given points:

⇒ m = [(-8) - (-14)] / [-1 - (-2)] = [-8 + 14] / [-1 + 2] = 6

Here, we see that the slope is 6, from the first two points

For, next two points:

⇒ [-2 - (-8)] / [0 - (-1)] = [-2 + 8] / [0 + 1] = 6

Here also, we see that the slope is 6.

Hence, the slope is constant for the given pairs of coordinates.

So, it is clear that the points (-2, -14), (-1, -8), (0, -2) and (1, 4) are collinear.