Cost Function In a cost function of the form C(x) = mx + b, the m represents the marginal cost per item and b the fixed cost. Conversely, if the…
Month: July 2014
f(x) Notation
f(x) Notation Letters such as f , g , or h are often used to name functions. For example , f might be used to name the function y =…
Parallel Lines andPerpendicular Lines
Parallel Lines Two lines are parallel if and only if they have the same slope, or if they are both vertical. Perpendicular Lines Two lines are perpendicular if and…
Equations of lines
Equations of lines Equation Description y = mx + b Slope-intercept form: slope m , y-intercept b y – y1 = m(x – x1) Point-slope form: slope m ,…
Slope Intercept Form and Point-Slope from
Slope Intercept Form If a line has slope m and y-intercept b, then the equation of the line in slope-intercept form is y = mx + b. when b…
Slope Of a Line
Slope if a Line An important characteristics of a straight line is its slope, a number that represents the “steepness” of the line. To see how slope is defined, look…
Completing the Square
Completing the Square To solve ax2+ bx + c = 0 (a ≠0) by completing the square, use these steps. Step 1 Be sure the squared term…
Solving an Equation with Radicals
Solving an Equation with Radicals Step 1 Isolate the radical. Make sure that one radical term is alone on one side of the equation. Step 2 Apply the…
Distance Formula
Distance Formula The distance between the points (x1, y1) and (x2, y2) is d = .
Conditions for a Simplified Radical
Conditions for a Simplified Radical 1. The radicand has no factor raised to a power greater than or equal to the index. 2. The radicand has no fractions.…
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