4.4 + 4.5 Scatter Plots and Analyzing Lines of Fit

Do Now - Log on to today's 1/12 Lesson

Grab a white board and a pencil!

Poll

Pick the picture that best represents your weekend?

Multiple Choice

An equation written in Slope-Intercept Form:

• y-y1=m(x-x1)

• y=mx + b

• a^2+b^2 = c^2

• ax + by = c

Multiple Choice

An equation written in Point-Slope Form:

• y - y1 = m (x-x1)
• ax + by = c

• y = mx + b

• a^2 + b^2 = c^2

Multiple Select

What is true about parallel lines?

• They have the same slopes

• They will have opposite reciprocal slopes

• The lines will never intersect

• The lines will intersect at a right angle

Multiple Select

What is true about perpendicular lines?

• They have the same slopes

• They will have opposite reciprocal slopes

• The lines will intersect at a right angle

• The lines will intersect

Multiple Choice

What is true about lines a and c?

• They are Parallel

• They are Perpendicular

• They are neither parallel or perpendicular

Draw

Write an equation of the line that passes through (-1,4) and is perpendicular to the line y = -1/3x + 1

Multiple Choice

What is a scatter plot and what does it show?

• A graph that shows the relationship between two data sets

• A graph that shows only one data set

• A table that lists numbers

• A pie chart that shows percentages

Multiple Choice

At what grade point average does the student who spends 6 hours each week on homework achieve?

• 2.0

• 2.5

• 3.0

• 3.5

Multiple Choice

How many hours each week does the student who has a 2.75 grade point average spend on HW?

• 2

• 8

• 4

• 12

Multiple Choice

Based on the graph, if Joe earned $400, how many hours did he work?

• 25 hours
• 35 hours
• 45 hours
• 15 hours

Multiple Choice

What is the correlation between length of running start and distance of jump?

• positive:  the further you run the further you jump
• negative: the less you run the less distance of your jump
• positive: the further your running start the less your distance

Multiple Choice

What is the correlation?

• Negative correlation
• No correlation
• Positive correlation
• All of the above

Multiple Choice

Look at the 3 scatterplots to answer this question.

Which graph shows a positive correlation?

• 1

• 2

• 3

Multiple Choice

How much you eat and how hungry you will be.

• Positive correlation
• Negative correlation

Multiple Choice

Which graph (A, B, or C) best represents the line of best fit for the scatterplot showing the relationship between games played and tickets won?

• Graph A

• Graph B

• Graph C

• None of the above