Extra Credit-Graphing Linear Equations

How do you find the slope from two points (x1, y1) and (x2, y2)?

• Slope (m) = (y2 - y1) / (x2 - x1).

• Slope (m) = (y1 - y2) / (x2 - x1).

• Slope (m) = (y2 + y1) / (x2 + x1).

• Slope (m) = (y1 + y2) / (x2 - x1).

Which graph is correct for y = -x + 3?

• Graph A

• Graph B

• Graph C

• Graph D

What does the y-intercept represent in a linear equation?

• The point where the line crosses the x-axis.

• The slope of the line.

• The point where the line crosses the y-axis.

• The distance from the origin to the line.

What is the standard form of a linear equation?

• Ax + By = C, where A, B, and C are integers.

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

• y = ax^2 + bx + c, where a, b, and c are constants.

• Ax^2 + By^2 = C, where A, B, and C are integers.

In the following equation, what is the y-intercept? y = -3x + 7

• 5

• 7

• -3

• 10

If a line has an undefined slope, what does that indicate?

• The line is horizontal.

• The line is vertical.

• The line has a positive slope.

• The line has a negative slope.

Define slope in the context of linear equations.

• Slope is the measure of the steepness of a line, calculated as the rise over run.

• Slope is the horizontal distance between two points on a line.

• Slope is the vertical distance between two points on a line.

• Slope is the angle formed by a line with the x-axis.

If a line has a slope of 0, what does that indicate?

• The line is vertical.

• The line is horizontal.

• The line has a positive slope.

• The line has a negative slope.

What is the relationship between perpendicular lines in terms of slope?

• Perpendicular lines have slopes that are equal to each other.

• Perpendicular lines have slopes that are negative reciprocals of each other.

• Perpendicular lines have slopes that add up to one.

• Perpendicular lines have slopes that are both positive.

What is the relationship between parallel lines in terms of slope?

• Parallel lines have different slopes.

• Parallel lines have the same slope.

• Parallel lines intersect at a right angle.

• Parallel lines have slopes that are negative reciprocals.