2021 Illustrative Math Grade 8 Unit 4 EOU Review

Front

What is the general form of a linear equation?

Back

The general form of a linear equation is Ax + By = C, where A, B, and C are constants.

Front

How do you find the intersection point of two lines represented by equations?

Back

To find the intersection point, solve the system of equations simultaneously, either by substitution or elimination.

Front

What does it mean for a system of equations to have no solution?

Back

A system of equations has no solution when the lines are parallel and do not intersect.

Front

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

Back

The slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

How can you determine if two lines are parallel?

Back

Two lines are parallel if they have the same slope but different y-intercepts.

Front

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

Back

The y-intercept is the point where the line crosses the y-axis, represented by the value of b in the slope-intercept form.

Front

What does the graph of y = -x + 2 look like?

Back

The graph is a straight line with a slope of -1 and a y-intercept at (0, 2).

Front

How do you graph a linear equation?

Back

To graph a linear equation, find two or more points that satisfy the equation and plot them on a coordinate plane, then connect the points with a straight line.

Front

What is the solution to the system of equations x = 5y + 2 and x = 4y?

Back

The solution is the point (-8, -2), where the two lines intersect.

Front

What does it mean for two lines to intersect?

Back

Two lines intersect when they cross each other at a single point, which represents the solution to the system of equations.