Understanding Y-Intercept in Linear Functions

The video tutorial explains the concept of the Y-intercept in a linear function, represented by the value B in the point-slope formula. It describes how to calculate the Y-intercept by setting x to zero and finding the corresponding y value. The tutorial also demonstrates how to identify the Y-intercept from a table of values, where the Y-intercept occurs when x equals zero. Finally, it discusses the graphical representation of the Y-intercept, showing that the linear function crosses the Y-axis at the point where x is zero.

What does the Y-intercept represent in a linear function?

• The point where the function crosses the Y-axis

• The slope of the function

• The maximum value of the function

• The point where the function crosses the X-axis

How can you find the Y-intercept from a table of values?

• By identifying the maximum y-value

• By finding the y-value when x is zero

• By calculating the slope

• By finding the x-value when y is zero

What is the Y-intercept of the function if y = 4 when x = 0?

• 1

• Undefined

• 4

• 0

In the point-slope formula, what does the value B represent?

• The slope of the line

• The Y-intercept

• The X-intercept

• The midpoint of the line

Where does the linear function cross the Y-axis in the given graph?

• (4, 4)

• (0, 4)

• (4, 0)

• (0, 0)