Equation of a line, with a slope m and passing through a point (x1, y1) is written as y-y1= m (x-x1)

Equation of a line, with a slope m and passing through a point (x₁, y₁) is written as y-y₁₌m (x-x_1).Substituting the given values in this equation we will have

Y+1= - 2 (x-1).

Simplifying this, we will have y= -2x+1

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