Equation(s)
Identifying slope and y-intercept
Calculate the slope
Slope Intercept Form
Miscellaneous
100
m = -4
b= 5
y= -4x + 5
100
What is slope between the two points?
-7/9
100
the line containing the points (5, 7) and (3, 6)
m=1/2
100
What is slope intercept form?
y = mx + b
100
What variable represents y-intercept?
b?
200
m=1/2
b=-4/5
What is
y=1/2x-4/5
200
Is this slope positive or negative?
Positive
200
the line containing the points (2, 5) and (8, 1)
m=-2/3
200
What is the slope?
y = 3x - 5
m = 3
200
The measure of the steepness of a line
slope
300
A plumber charges $30 per hour for a house call plus $50 fixed fee.
What is:
The cost = $30 (number of hours) + $50
y = 30x + 50
300
What is the y-intercept? 
1
300
Which set is perpendicular? A or B?
A. y = 1/2x + 4 and y = -2x - 6
B. y = -5x + 4 and y= 1/4x + 6
A. y = 1/2x + 4 and y = -2x - 6
B. y = -5x + 4 and y= 1/4x + 6
300
What is the y intercept?
y = -3x - 7
b = -7
300
True or False: This is a horizontal line.
x=7
False
400
3 adult tickets (a) and 2 child tickets (c) cost
$31.88
2 adults and 1 child cost
$18.92
3a+2c = 31.88
2a + c = 18.92
400
What is the slope and y-intercept?
m=-1/2
b=1
400
perpendicular to the line with points (2,3) and (9,7)
m=-7/4
400
What equation has:
Points (8, 1) and (2, -2)
Y intercept: -3
y=1/2x-3
400
word ratio for slope
What is Rise over Run?
500
40 coins (dimes d) and (quarters q) are worth worth
$7.60
Write equations to represent the information.
BONUS: find how many dimes and quarters by using one of the three methods of solving systems of linear equations.
d+q=40d plus q equals 40 (Total coins)
0.10d+0.25q=7.60 (Total value)
BONUS: 16 dimes and 24 quarters
500
What is the slope of a vertical line?
Undefiined
500
what is the slope of the line parallel to the line with points (0,10) and (5, -5)
m=-3
500
Given:
Points (0, -6) and (-5, -8)
Find:
m=
b=
-8+6 / -5-0. = -2/-5 = 0.4
(y+8) = 0.4x - (0.4)(-5) y = -7.6x -(2-8)
y = -6
What is:
m=2/5
b=-6
500
What is the point slope formula?
(y-y1) = m(x-x1)