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 on a graph.

Front

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

Back

To find the solution graphically, plot each equation on the same coordinate grid and identify the point(s) where the lines intersect.

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 exactly one solution to the system of equations represented by those lines.

Front

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

Back

Front

How do you determine if two lines are parallel?

Back

Two lines are parallel if they have the same slope but different y-intercepts, meaning they will never intersect.

Front

What is the y-intercept of a line?

Back

Front

How can you solve a system of equations using substitution?

Back

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

Front

Back

Front

Back

The slope of the line is 2.

Front

What does it mean if two lines are the same?

Back

If two lines are the same, they have the same slope and y-intercept, meaning they represent the same equation and overlap completely.