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What is the point-slope form of a linear equation?
Ax + By = C
y = mx + b
y - y₁ = m(x - x₁)
y = kx
The correct answer is: y - y₁ = m(x - x₁)
The point-slope form of a linear equation is represented as y - y₁ = m(x - x₁), where m is the slope of the line and (x₁, y₁) is a specific point through which the line passes. This form is particularly useful because it makes it easy to write the equation of a line when you know the slope and a point on the line. In this equation, 'y' and 'x' represent the variables of the line, while 'y₁' and 'x₁' are the coordinates of the given point on the line. The term 'm' signifies the rate of change or slope of the line, describing how much 'y' increases or decreases when 'x' increases by 1 unit. This form directly conveys how an individual point relates to the slope, which is beneficial for solving problems that require finding the equation of a line given a slope and a specific point. Other forms listed have their specific uses, such as the slope-intercept form (y = mx + b) or the standard form of a linear equation (Ax + By = C), but when given a point and the slope, point-slope form provides the most straightforward application