Option (b) is correct. The formula m = (y₂ - y₁)/(x₂ - x₁) is used to find the slope of the line.
What is slope of the line?
In Mathematics, "a slope of a line is the change in y coordinate with respect to the change in x coordinate".
According to the question,
Equation of the line using slope intercept form is y = mx + c where 'x, y' are variable and 'm' is the slope of the line and 'c' is constant.
To find the slope of the line m = (y₂ - y₁)/(x₂ - x₁).
Hence, the option (B) m = (y₂ - y₁)/(x₂ - x₁) is correct.
Learn more about Slope here
https://brainly.com/question/12425007
#SPJ2
