Question

a set of two or more equations that involve the same variables is called a.
in a system of equations, a represents a limitation or condition that must be met.
a is used to represent a quantity that can change in a real - world problem.
an equation that represents a straight line on a graph is known as a.

Explanation:

1. By definition, a set of two or more equations with the same variables is a system of equations.
2. In a system of equations, a constraint represents a limitation or condition that must be met.
3. A variable represents a quantity that can change in a real - world problem.
4. An equation representing a straight line on a graph is a linear equation.

Answer:

1. System of equations
2. Constraint
3. Variable
4. Linear equation