__Equation of a straight Line__**An equation of straight line is given by**

$y=mx+c$

• The variables x and y are linearly related

• The term

**is known as**

*c**. It represents the y value where the line cuts the y-axis*

**y-intercept**• The term

**is the**

*m***of the straight line and its value is constant**

*gradient*