Vocabulary
What is the ratio of the vertical distance compared to the horizontal distance?
Slope - Rate of Change
Identify the slope from
y=-4x + 3
m = -4
What is point slope form?
y- y1= m(x-x1)
What is standard form?
ax + by = c
Parallel lines have the __________ slope.
Same
y-intercept
Identify the y-intercept from :
y = 1/2x + 12
(0, 12)
Write an equation in point slope form given m = 3 ( -4, 8)
y - 8 = 3(x + 4)
What are the x and y intercepts of 3y - 5x = -15
(3, 0) and (0, -5)
Are the two lines parallel, perpendicular or neither?
y = 5 and x = -2
Perpendicular
Two lines that intersect at a 90 degree angle. Their slopes are negative reciprocals.
Perpendicular Lines
Write an equation in slope-intercept form when m = -1/3 and the point (0, 3)
y= -1/3x + 3
What is the slope of
y + 11 = -5(x - 4)
m = -5
m = 4/3
Are the two lines parallel, perpendicular or neither?
y = 1/2 and y = -4
Parallel
What is the slope formula?
y2-y1/x2-x1
Write an equation in slope intercept form given:
(0, 9) and ( 4, 14)
y=5/4x + 9
What is the y-intercept of
y + 3 = 1/2(x - 4)
(0, -5)
What is the slope and y-intercept of 13x - 5y = 65
(0, -13)
m = 13/5
Are the two lines parallel, perpendicular or neither?
y = 2x + 1 and 2x - y = 3
Parallel
What is the line of best fit?
A linear equation to best represent a scatterplot.
Write an equation give the points
(-4 , 5) ( 13, 5)
y= 5
What is the slope and y-intercept of
y - 3 = -2/3(x - 6)
m =-2/3
(0,7)
Rewrite 5x - 4y = -20 in slope -intercept form
y = 5/4x + 5
Are the two lines parallel, perpendicular or neither?
-2x + 5y = -4 and y = -5/2x + 6
Perpendicular