8th Grade Topic 2 Review

Find the solution: 10 = 4x - 2

• x = 1

• x = 2

• x = 3

• x = 4

What is the formula for the slope of a line given two points (x1, y1) and (x2, y2)?

• Slope (m) = (y2 - y1) / (x2 - x1).

• Slope (m) = (y1 - y2) / (x1 - x2).

• Slope (m) = (y2 + y1) / (x2 + x1).

• Slope (m) = (y2 * y1) / (x2 * x1).

What is the slope of a line in the equation y = mx + b?

• The slope (m) represents the rate of change of y with respect to x.

• The slope (m) is the y-intercept of the line.

• The slope (m) is always a positive number.

• The slope (m) indicates the length of the line segment.

What does it mean if an equation has infinitely many solutions?

• The equations represent different lines, meaning no points are solutions.

• The equations represent the same line, meaning every point on the line is a solution.

• The equations have no solutions, meaning they are parallel lines.

• The equations represent a single point, meaning only one solution exists.

Definition of a proportional relationship

• A relationship where the ratio of two variables is constant.

• A relationship where one variable increases and the other decreases.

• A relationship that involves a fixed sum of two variables.

• A relationship that is always linear but not proportional.

What is the y-intercept in the equation y = mx + b?

• The slope of the line

• The point where the line crosses the x-axis

• The point where the line crosses the y-axis

• The value of x when y is zero

Is the graph proportional or non proportional? (Example: y = 2x + 1)

• Proportional

• Non proportional

• Constant

• Linear but not proportional

3(x + 2) = 3x + 6

• One solution

• No solution

• Infinitely many solutions

• Exactly two solutions

What is the definition of a variable in mathematics?

• A symbol used to represent an unknown value.

• A fixed value that does not change.

• A type of mathematical operation.

• A graphical representation of data.

Is the graph proportional or non proportional? (Example: y = 2x)

• Proportional

• Non-Proportional

• Linear

• Quadratic