Equations of the Line of Best Fit

What is the line of best fit?

• f(x)= 5x+1.82
• cannot be determined
• f(x)= 1.82x + 5.02
• f(x)= 1.1x + 4.2

What type of correlation does this graph have?

• positive
• negative
• none
• all of the above

Find the rate of change

• 1
• 2
• 11
• Not a constant slope/Non-Linear

Find the equation of the line of best fit for the given data

• y=163.41x+4.19
• y=-163.41x+4.19
• y=-4.19x+163.41
• y= 4.19x+(-163.41)
  

What type of correlation does this graph have?

• positive

• negative

• no correlation

• all of the above

Which scatter plot shows a linear relationship between x and y?

• Graph A
• Graph B
• Graph C
• Graph D

The table shown is comparing a person's foot length to their height in cm. Calculate a line of best fit.

• f(x) = 25.05x + 5.57
• f(x) = 5.57x + 25.05
• f(x) = -5.57x + 25.05
• f(x) = 5.57x - 25.05

Write the equation for the table given

• y = 1/3x
• y = 3x
• y = 1/2x

What is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points
• To make it look like you know what you are doing

What is the type of correlation?

• Negative 
• no correlation
• positive