Chapter 7: Problem 106
Write a system of equations having \(\\{(-2,7)\\}\) as a solution set. (More than one system is possible.)
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Chapter 7: Problem 106
Write a system of equations having \(\\{(-2,7)\\}\) as a solution set. (More than one system is possible.)
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When is it easier to use the addition method rather than the substitution method to solve a system of equations?
Will help you prepare for the material covered in the next section. In each exercise, graph the linear function. $$2 x-3 y=6$$
If \(x=3, y=2,\) and \(z=-3,\) does the ordered triple \((x, y, z)\) satisfy the equation \(2 x-y+4 z=-8 ?\)
Let \(f(x)=\left\\{\begin{array}{cll}x+3 & \text { if } & x \geq 5 \\ 8 & \text { if } & x<5\end{array}\right.\) Find \(f(12)-f(-12) .\) (Section 1.3, Example 6)
How do you determine if an ordered pair is a solution of an inequality in two variables, \(x\) and \(y ?\)
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