Writing a Linear Equation (continued)

You might also be given the slope and one point on a line. This is where the point-slope version of the linear equation comes in handy. For example, find the equation of a line given a slope of 3 and (1, 4) as a point on the line.

Since you are already given the slope, you do not need to find it. The next step is to plug in the values that you do have into the point-slope form.

y – y₁ = m(x – x₁)
y – 4 = 3(x – 1)
y – 4 = 3x – 3 
y = 3x + 1