Understanding Horizontal Lines and Their Equations

The video tutorial explains how to determine the equation of a line in slope-intercept form, focusing on a horizontal line. It covers identifying the Y-intercept and calculating the slope using both graphical methods and the slope formula. The tutorial concludes by formulating the equation of the line, emphasizing that horizontal lines have a slope of zero and an equation in the form y equals a constant.

What is the general form of the equation of a line in slope-intercept form?

• y = mx + b

• x = b + my

• y = b + mx

• x = my + b

What does the 'm' represent in the slope-intercept form of a line?

• Slope

• X-intercept

• Constant

• Y-intercept

In the equation y = mx + b, what does 'b' represent?

• Y-intercept

• X-intercept

• Slope

• Origin

Where does the line intersect the y-axis in the given graph?

• (0, -4)

• (4, 0)

• (0, 4)

• (-4, 0)

What is the slope of a horizontal line?

• Infinity

• 0

• Undefined

• 1

If a line has a slope of 0, what type of line is it?

• Vertical

• Horizontal

• Diagonal

• Curved

Which of the following is true for any horizontal line?

• It has an undefined slope

• It has a slope of 1

• It has a negative slope

• It has a slope of 0

How do you calculate the slope using two points on a line?

• Change in x divided by change in y

• Change in y divided by change in x

• Difference of x and y coordinates

• Sum of x and y coordinates

What is the result of the slope calculation using the points (-6, -4) and (0, -4)?

• 0

• 1

• Undefined

• -1

What is the equation of a horizontal line with a y-intercept of -4?

• y = -4x

• x = -4

• x = 4

• y = -4