Writing Slope Intercept
Write the slope intercept form of an equation that has a slope of 3 and a y-intercept of -7
y = 3x - 7
Write the point-slope equation for a line that passes through the point (-5, -4) and has a slope of 8/5
y + 4 = 8/5 (x + 5)
Write the standard form of the equation below:
y = 2/3x + 2
2x - 3y = -6
Write the slope intercept equation of the line that passes through the point (-5, 0) and is parallel to the line y = -x + 5
y = -x - 5
What are the three correlations that a scatter plot can have?
Positive, Negative, No Correlation
Write the slope intercept equation of a line that has a slope of 9 and passes through the point (0, -2)
y = 9x - 2
Write the point-slope equation for a line that passes through (-5, -1) and (5, 3)
y + 1 = 2/5 (x + 5)
Write the standard form of the equation below
y + 1 = -5/3 (x - 3)
5x + 3y = -12
Write the slope intercept equation of the line that passes through (1, 1) and is perpendicular to
y = x + 2
y = -x + 2
What correlation would a scatter plot have if the two variables did not have any known relationship?
No Correlation
Write the slope-intercept equation of a line that has a slope of 1/2 and passes through the point (-4, 6)
y = 1/2x + 8
Write the point-slope equation of the line that passes through (5, 4) and (2, -5)
y - 4 = 3(x - 5)
Write the standard form equation of a line that has a slope of 2 and passes through the point (1, -2)
2x - y = 4
Write the slope intercept equation of the line that passes through (4, 4) and is parallel to the line
y = 9/4x + 4
y = 9/4x - 5
What correlation would a scatter plot have where one variable increases and the other also increases?
Positive
Write the slope intercept equation of a line that passes through the points (5, 1) and (2, -2)
y = x - 4
Write the point-slope equation of the line that passes through (4, -3) and (0, -3)
y = -3
Write the standard form equation of a line that passes through (0, -1) and (5, -4)
3x + 5y = -5
y = -1/4x - 4
y = 4x - 1
What correlation would a scatter plot have if one variable increases and the other decreases?
Negative Correlation
Write the slope intercept equation for a line that passes through (-4, -3) and (4, 4)
y = 7/8x + 1/2
Write the point-slope equation for the line that has a slope of -2/5 and has a y-intercept of -3
y + 3 = -2/5x
Write the standard form equation of the line that passes through (-4, 5) and (1, -3)
8x + 5y = -7
Write the STANDARD form equation of the line that passes through (-1, 4) and is perpendicular to
y = 1/2x + 1
2x + y = 2
What is the line called that you draw to model the trend of your data?
Line of Best Fit