Finding the Equation of a Line
To find the equation of a line, we can use the point-slope form of a linear equation, which is given by:
y - y1 = m(x - x1)
In this equation:
- m is the slope of the line.
- (x1, y1) is a specific point on the line.
Given that the slope (m) is 3 and the line passes through the point (2, 12), we can substitute these values into the point-slope form:
y - 12 = 3(x - 2)
Next, let’s simplify the equation:
- Distributing the slope on the right side:
- Now, we solve for y by adding 12 to both sides:
- This simplifies to:
y - 12 = 3x - 6
y = 3x - 6 + 12
y = 3x + 6
Thus, the equation of the line that passes through the point (2, 12) with a slope of 3 is: