Answer:
a- A system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2.
b- a financial gain, especially the difference between the amount earned and the amount spent in buying, operating, or producing something.
c- income, especially when of a company or organization and of a substantial nature.
d- (of an object or action) require the payment of (a specified sum of money) before it can be acquired or done.
e- The standard form for linear equations in two variables is Ax+By=C. For example, 2x+3y=5 is a linear equation in standard form.
f- The substitution method is a way of solving a system of equations by expressing the equations in terms of only one variable.
g- The elimination method is where you actually eliminate one of the variables by adding the two equations.
h- Solving one particular problem without regard to related issues.
i- the point or state at which a person or company breaks even.
j- The domain of a function is the complete set of possible values of the independent variable.
k- The Range is the difference between the lowest and highest values. Example: In {4, 6, 9, 3, 7} the lowest value is 3, and the highest is 9. So the range is 9 − 3 = 6.
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