The formula to calculate the equation of a line using the point-slope form is:
\[ y - y_1 = m(x - x_1) \]
Where:
Let's say the point is (2, 3) and the slope is 4. Using the formula:
\[ y - 3 = 4(x - 2) \]
So, the equation of the line is \( y - 3 = 4(x - 2) \).
The point-slope formula is used to find the equation of a line when you know the slope and a point on the line. It is particularly useful in algebra and coordinate geometry.