Answer: A system of linear equations consists of two or more linear equations made up of two or more variables, such that all equations in the system are considered simultaneously.

To find the unique solution to a system of linear equations, we must find a numerical value for each variable in the system that will satisfy all equations in the system at the same time.

In order for a linear system to have a unique solution, there must be at least as many equations as there are variables.

The solution to a system of linear equations in two variables is any ordered pair

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that satisfies each equation independently. Graphically, solutions are points at which the lines intersect.

Key Terms

system of linear equations: A set of two or more equations made up of two or more variables that are considered simultaneously.

dependent system: A system of linear equations in which the two equations represent the

same line; there are an infinite number of solutions to a dependent system.

inconsistent system: A system of linear equations with no common solution because they

represent parallel lines, which have no point or line in common.

independent system: A system of linear equations with exactly one solution pair

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Step-by-step explanation:

6 0

2 years ago

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Help plzzzzz hurry

V125BC [204]

Answer:

-9, -5, -4.1, -4

$\\q\leq -4$

Step-by-step explanation:

I think what you're missing here is that there is a negative sign in front of the q. This means that whatever number you put in for q will be multiplied by negative 1. Positive numbers will become negative, and negative numbers will become positive.

If you substitute 9 for q you will get $-9\geq 4$ , which is clearly not true, because -9 is way less than 4.

For writing the equation you divide both sides by -1. When you do this however, you must flip the inequality sign

$-q\geq 4\\q\leq -4$

the > sign turned into <, and the q and 4 switched signs.

6 0

3 years ago