In how many ways you can join two points lying on a paper? Yes, infinite ways. And how will you join them such that your pen travels the shortest distance between them? Well, the answer is through a straight line. Let’s understand the basics and equations of straight lines and how to calculate the distances from a point.

**FAQs on Straight Lines**

**Question 1: What does a straight line mean?**

**Answer:** It refers to the line that we can trace by a point traveling in a constant direction. Also, this line has zero curvature and it is the shortest distance between two points. Furthermore, it does not have breadth or thickness; the trace of a moving point.

**Question 2: Which line is straight?**

**Answer:** Every line that does not have a curvature is a straight line. It can be a vertical line that goes up and down, horizontal line that goes from right or left or vice versa. In addition, straight lines are also parallel, as they never intersect. And perpendicular lines are straight lines too

**Question 3: State some properties of a straight line?**

**Answer:** These lines move on a straight path and do not change direction. Moreover, the slope of a line also known as the gradient of straight-line Furthermore, it measure the ratio of the vertical change to the horizontal change.

**Question 4: What is the equation of a straight line?**

**Answer:** The equation of the straight line is y = mx + c, where m is the gradient, and y = c is the value where the line cuts the y-axis. Furthermore, the number c is called the intercept on the y-axis.