5.7.notebook
January 10, 2017
5­5 HW Answers
4) x­int:(­1/2, 0)
1) x­int: (­10,0)
y­int: (0,1) y­int: (0,­2)
2) x­int: (­4,0)
y­int: (0,2)
3) x­int:(­2/3, 0)
y­int: (0,­2)
5) ­x+y=6
6) x+y=­8
7) x­int: (­2,0)
y­int: (0,3)
8) x­int: (2,0)
y­int: (0,4)
9) vertical
10) horizontal
5.7.notebook
5­7 HW Answers
January 10, 2017
5.7.notebook
January 10, 2017
5.7.notebook
January 10, 2017
5.7.notebook
January 10, 2017
Objective: To rewrite equations into slope­intercept form. To write equations using all three forms. Warm Up 1/6
1)
2) What is the x­intercept of the following equation? 3x+5y =12 5.7.notebook
January 10, 2017
Objective: To interpret and create scatter plots. To analyze and write equations of trend lines. Warm Up 1/9
5.7.notebook
January 10, 2017
Objective: To interpret and create scatter plots. To analyze and write equations of trend lines. Warm Up 1/10
5.7.notebook
January 10, 2017
5­7: Scatter Plots and Trend Lines
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________________________________ ­ a graph that relates two different sets of data by displaying them as ordered pairs o
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Generally in the first quadrant of the coordinate plane (positive numbers)
Trend line ­ a line on a scatter plot, drawn near the points, that shows correlation
5.7.notebook
January 10, 2017
dependent (y)
independent (x)
5.7.notebook
January 10, 2017
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Line of best fit – trend line that shows the relationship between two sets of data most accurately
o
Step 1: Make a scatter plot o
Step 2: Draw a trend line
o
Step 3: Estimate the coordinates of two points on the line (or if provided, pick two points)
o
Step 4: Write an equation of the trend line (using slope)
o
Step 5: Estimate the given value