![]() If the angle of inclination of the straight line y = k x + b is obtuse, then it corresponds to the conditions π 2 0, decreases as k x ![]() Equality is specified by the equality x = c with the value c being a real number. If α = π 2, then the location of the line is perpendicular to x.If the angle of inclination of the straight line y = k x + b is sharp, then the conditions 00, and there is an increase in the graph.So, the form of the equation will be y = b. The slope of the straight line is 0 only when o x is parallel and the slope equals zero, because the tangent of zero is 0.The slope is equal to the slope of the straight line, in other words k = t g α. The slope of the straight line y = k x + b is called the numerical coefficient k. In the figure, the direction ox is indicated by a green arrow and a green arc, and the angle of inclination by a red arc. The angle of inclination of the straight line y = k x + b is called the angle α, which is measured from the positive direction of the x-axis to the straight line y = k x + b in the positive direction. The equation of the tangent line will be considered with examples, the equations of the tangent to curves of the 2nd order will be found. The article gives a detailed explanation of the definitions, the geometric meaning of the derivative with graphic notation.
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