Predict Change in Line When Slope or Y-Intercept Changes

Consider the data shown on the graph. What does the slope and y-intercept of the graph represent?

• The slope represents the price per golf game $5.22, and the y-intercept represents average time it takes to play golf, 118.1 minutes

• the slope represents the gain in points per week, 118.09, and the y-intercept represetnts the beginning score of -5.22

• the slope represents an increase of 118.1 points in golf score per hour spent practicing each week, and the y-intercept -5.22 represents the starting golf score with no practice

• the slope represents a decrease of 5.22 points in golf score per hour spent practicing each week, and the y-intercept 118.1 represents the starting golf score with no practice

The __________ of a regression line describes the predicted change in the y variable for each one increase in the x variable.

• slope

• y-intercept

• correlation

• explanatory variable

The ____________ is the predicted value of y when x is equal to 0.

• correlation

• association

• y-intercept

• slope

A(n) _____________________________ is a line that describes how a response variable y changes as an explanatory variable x changes.

• scatterplot

• exponential model

• regression line

• quadratic model

Which of these lines will intercept the y-axis at 5?

• y = 5x

• y = x - 5

• 5y = 5x + 5

• y = x + 5

Determine the slope and y-intercept.         y = 3/2x + 3

• slope: 5   y-intercept:  (0,3) 

• slope: 3/2   y-intercept:  (0,3) 

• slope:  4  y-intercept:  (0,3/2)

• slope: 1/5   y-intercept:  (0,5) 

What is the y-intercept of the line
y = 4x - 6?

• 4

• 4x

• 6

• -6

The line that makes the sum of the squared residuals as small as possible is the _________________.

• least squares regression line

• regression line

• y-intercept

• quadratic model

The __________ is a relationship between two variables in which knowing the value of one variable helps us predict the value of the other.

• association

• least squares regression line

• correlation

• slope

What does "m" represent in y=mx+b?

• y-intercept

• slope

• macaroni

• nothing