Question

Y₂-y₁=m(x₂-x₁) solve for x

Answer 1

`y_2-y_1=m(x_2-x_1)\ \ \ \ |divide\ both\ sides\ by\ m\\eq0\\\\x_2-x_1=(y_2-y_1)/(m)\ \ \ \ \ |add\ x_1\ to\ both\ sides\\\\\boxed{x_2=(y_2-y_1)/(m)}\\\\x_2-x_1=(y_2-y_1)/(m)\ \ \ \ |subtract\ x_2\ from\ both\ sides\\\\-x_1=(y_2-y_1)/(m)-x_2\ \ \ \ \ |change\ signs\\\\\boxed{x_1=x_2-(y_2-y_1)/(m)}`