Rate of Change and Y-Intercept

The video tutorial explains how to find the Y-intercept from a table, even when x=0 is not present. It covers calculating the rate of change, extending the table to include x=0, and using this information to determine the Y-intercept. The tutorial provides two examples and concludes with creating an equation using the slope and Y-intercept.

What is the first step in finding the Y-intercept from a table when x=0 is not present?

• Look for the highest y-value

• Calculate the rate of change

• Find the average of all y-values

• Subtract the smallest x-value from the largest

How do you determine the rate of change in a table?

• By subtracting the smallest x-value from the largest

• By adding all x-values together

• By dividing the largest y-value by the smallest

• By calculating the change in y over the change in x

What should you do if the rate of change is not consistent across the table?

• Adjust the values to make them consistent

• Use only the consistent parts of the table

• Ignore the inconsistent values

• Recalculate the rate of change

In the new example, what is the rate of change for the first two y-values?

• 2 over 1

• 4 over 2

• 5 over 2

• 3 over 1

What is the constant rate of change found in the new example?

• 3 over 1

• 2 over 1

• 4 over 2

• 1 over 1

What is the final equation derived from the table in the video?

• y = 2x + 4

• y = 2x + 1

• y = x + 2

• y = 3x + 1