Exploring Mod 6 Lesson 3 Concepts

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

• x = my + b

• y = m/x + b

• y = mx + b

• y = mx - b

What does the 'm' in the slope-intercept equation represent?

• Y-intercept

• Slope

• X-intercept

• Coordinate

What is a trend line in the context of scatter plots?

• A line connecting all data points

• A line that represents the average of the data

• A line that best fits the data points

• A line with a negative slope only

How do you determine a good trend line?

• It balances the data points above and below it

• It starts at the origin

• It passes through all data points

• It has a positive slope

Why might different people draw slightly different trend lines for the same scatter plot?

• Because of errors in the data

• Due to subjective interpretation of the data

• Because the slope must be positive

• Because the y-intercept varies

When writing the equation of a trend line, what is the first step?

• Calculate the slope

• Choose any two data points

• Find the y-intercept

• Choose any two points on the trend line

What does the y-intercept represent in a trend line equation?

• The maximum value of y

• The slope of the line

• Where the line crosses the y-axis

• The average value of y

What is the significance of the y-intercept in the context of a scatter plot?

• It shows the highest point of the data

• It indicates where the line crosses the x-axis

• It determines the slope of the line

• It represents where the line crosses the y-axis

How can trend lines be used in predictions?

• To calculate the slope of future lines

• To estimate the general direction of data

• To find the exact future data points

• To determine the y-intercept of future data

What does a positive slope in a trend line indicate?

• A decreasing trend

• An increasing trend

• No change in trend

• A cyclic trend