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Question | Answer |
The inequality form of [a,b] is | a ≤ x ≤ b |
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). |
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. |
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 |
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 . |
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) |