Can you show me a straight line with four point as a proof

To demonstrate a straight line with four points as a proof, we need to show that these four points all lie on the same line, meaning they are **collinear**. This can be done by proving that the slope between any two consecutive points is the same.

Let's take four points \( A(x_1, y_1) \), \( B(x_2, y_2) \), \( C(x_3, y_3) \), and \( D(x_4, y_4) \). For these points to lie on a straight line, the slope between any two points must be equal.

The slope between two points \( (x_1, y_1) \) and \( (x_2, y_2) \) is given by:

\[
m = \frac{y_2 - y_1}{x_2 - x_1}
\]

### Proof
Let's

Can you show me a straight line with four points as a proof?

Understand how to prove that four points lie on a straight line using the concept of collinearity. This solution demonstrates the slope formula and the collinearity theorem to show that the slope between consecutive points remains constant. Ideal for high school students in Grades 9-12.

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