UNIT 4 _PRACTICE TEST

Front

What is a system of equations?

Back

A system of equations is a set of two or more equations with the same variables. The solution is the point(s) where the equations intersect.

Front

How do you find the solution to a system of linear equations graphically?

Back

To find the solution graphically, plot both equations on a coordinate grid and identify the point where they intersect.

Front

What does it mean if two lines are parallel in a system of equations?

Back

If two lines are parallel, it means they have the same slope and will never intersect, indicating that there is no solution to the system.

Front

What is the slope-intercept form of a linear equation?

Back

Front

What is the significance of the y-intercept in a linear equation?

Back

Front

How can you determine if two lines are the same?

Back

Two lines are the same if they have the same slope and y-intercept, meaning they lie on top of each other.

Front

What does it mean for two lines to intersect at one point?

Back

If two lines intersect at one point, it means there is a unique solution to the system of equations represented by those lines.

Front

What is a vertical line and how is it represented in an equation?

Back

Front

What is a horizontal line and how is it represented in an equation?

Back

Front

How do you solve a system of equations using substitution?

Back

To solve by substitution, solve one equation for one variable and substitute that expression into the other equation.