3) Practice: Summarizing Fill in the blanks to complete the steps for finding the equation of a parallel line. Start with the form: y – y1 = m(x – x1). Identify the in the given equation. Substitute this for in y – y1 = m(x – x1). Substitute the given point's coordinates for and in y – y1 = m(x – x1). Isolate y by distributing and simplifying to rewrite the equation in form: y = mx + b.