Question | Answer |
The inequality form of [a,b] is | a ≤ x ≤ b
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The standard form for a linear equation in two variables is | Ax + By = C, A and B are not equal to 0
| The inequality form of [a,b) is | a ≤ x < b
| The graph of the equation x = a is a | vertical line
| The inequality form of (a,b] is | a < x ≤ b
| The inequality form of (a,b) is | a < x < b
| The graph of y = b is a | horizontal line.
| A company incurs a loss if the relation between Revenue R and Cost C is | R < C.
| The inequality form of (–∞,a] is | x ≤ a
| The point-slope form of the equation of the line with slope m that passes through (x1, y1) ) is | y – y1 = m(x – x1).
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| | The inequality form of (–∞,a) is | x < a
| In a competitive market, the intersection of the supply equation and the demand equation is called | the equilibrium point
| The inequality form of [b,∞) is | x ≥ b
| In a competitive market, the intersection of the supply equation and the demand equation is called the equilibrium point, the corresponding price is called | the equilibrium price
| The inequality form of (b,∞) is | x > b
| A first degree, or linear, equation in one variable is any equation that can be written in the form ax + b = 0 where a is not equal to zero. This is called | standard form
| If the equality sign in the standard form is replaced by <, >, ≤, or ≥, the resulting expression is called | a first degree, or linear, inequality.
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| | If we perform an operation on an equation (or inequality) that produces another equation (or inequality) with the same solution set, then the two equations (or inequalities) are | equivalent.
| If both sides of an inequality are multiplied by the same negative number or divided by the same negative number, then the direction or sense of the inequality will | reverse
| A company breaks even if the relation between Revenue R and Cost C is | revenues R = costs C
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| | The graph of x = k is | the graph of a vertical line k units from the y-axis.
| The graph of y = k is | the graph of the horizontal line k units from the x-axis.
| y = mx+b is called | the slope-intercept form of an equation of a line.
| Is formed by the intersection of a horizontal real number line, usually called the x axis, and a vertical real number line, usually called the y axis, at their origins | A Cartesian or rectangular coordinate system .
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| | y = mx+b The letter m represents | the slope
| The point with coordinates (0,0) is called | the origin
| A company makes a profit if the relation between Revenue R and Cost C is | R > C
| Is the coordinate of the intersection of the vertical line and the x axis | The x coordinate.
| y = mx+b The letter b represents | y-intercept
| The point-slope form of the equation of a line is | y-y1=m (x-x1) |