Finding m & b
Slope between two points
Slope-Int Form
Parallel Lines
Perpendicular Lines
100
State the slope and y-intercept from the equation:
y = 2x - 8
m = 2
b: (0 , -8)
100
Find the slope between the points: (6,5) & (5,4)
Slope = 1
100
Given slope and y-intercept, write the equation.
m = -7
y-intercept = 3
y = -7x + 3
100
Are these lines parallel? Yes or no. Show your work.
y = 3x + 1 and y = 1 - 3x
No.
Slope: 3 and slope: -3
100
Are these lines perpendicular? Yes or no. Show your work.
3y = 4x - 8 and 8y = 6x + 24
No. 4/3 and 3/4 are not opposites.
200
State the slope and y-intercept from the graph.
m = 1
b = 0
200
Find the slope between the points: (3,1) & (8,4)
slope = 3/5
200
Given slope and y-intercept, write the equation.
m = -8
b: (0 , -20)
y = -8x - 20
200
Are these lines parallel? Yes or no. Show your work.
3y = 6x - 12 and y - 2x = 11
Yes!
y = 2x - 4 and y = 2x + 11 have the same slope!
200
Are these lines perpendicular? Yes or no. Show your work.
2y = 5x - 8 and 5y = -2x + 20
Yes.
y = 5/2 x - 4 and y = -2/5 + 4 have "opposite reciprocal" slopes.
300
What is the slope of a horizontal line?
slope = 0
300
Find the slope of the line
-2
300
Given slope and y-intercept, write the equation.
m = -25
b: (0 , 100)
y = -25x + 100
300
Find the y-intercept of a line that is parallel to y = 1/2 x that goes through the point (6, -5).
y = 1/2 x - 8
b = -8
300
Find the y-intercept of a line perpendicular to y = -2x + 11 that goes through the point (8, 7).
y = 1/2x + 3
b = 3
400
State the slope and y-intercept from the graph.
m = 2
b: 4
400
Find the slope between the points: (1, -2) & (6,13)
slope = 3
400
Given slope and y-intercept, write the equation.
m = -1/2
b: 0
y = -1/2x
400
Find the y-intercept of a line that is parallel to y = 7x +1 that goes through the point (-6, 2).
y = 7x + 44
b = 44
400
Find the y-intercept of a line perpendicular to y = -1/3x + 1 that goes through the point (-7, 4).
y = 3x + 25
b = 25
500
Identify the slope and y-intercept of the equation.
y + 6x = 6
slope = -6
y-intercept = 6
500
Find the slope between the points: (-3, 6) & (-3,4)
Slope = Undefined
500
Given the graph, write the equation.
y = -3/4 x + 7
500
Write the equation of a line parallel to 2y = 10x + 8 with a y-intercept of 7.
y = 5x + 7
500
Write the equation of a line perpendicular to y = 7 + 1/2x with a y-intercept of 0.
y = -2x
600
Identify the slope and y-intercept of the equation
y = 5 - 2x
slope = -2
y-intercept = 5
600
Find the slope between the points: (2 , 5) and (3 , 9)
slope = 4
600
Write an equation for the line in slope-intercept form:
y=2/3 x - 4
600
Write the equation of a line parallel to y = 3x + 5 with a y-intercept of -8.
y = 3x - 8
600
Write the equation of a line perpendicular to y = 4x + 6 with a y-intercept of 9.
y = -1/4 x + 9