Linear Equations
What is the first step to solve x + 8 = -21?
Subtract 8 from both sides.
What is the formula for a direct variation?
y = kx
Domain is all the ____ values.
>and < uses an _____ circle.
open
constant of proportionality
k
Solve 2 (7 - x) - 4 = 0
x = 5
8 = 1/2x, what is k?
1/2
Range is all the ____ values.
y
>= and <= uses a ______ circle
closed
range is also know as the ____ values
output
Solve x/-3 = 12
x = - 36
8 = 1/2x, what is x?
x = 16
What is the domain and range of the function (0,2) (1,5) (2,8) (3,10)?
D:{0,1,2,3}
R: {2,5,8,10}
Graph x >-1
open circle pointing to the right
domain is also known as the _____ values
input
Solve -2( 3x + 5) = 2
x = -2
if y varies directly as x and the constant of proportionality is -3, what is the equation that represents this relationship?
y = -3x
What is the Domain of (9,1)(8,6)(4,3)(7,3)(6,7)(4,2)?
D:{9,8,4,7,6,4}
Solve x + 12 > -15
x > -3
Undo fractions by multiplying by the ______
reciprocal
Solve 6(2x - 5) = -3(7 - 3x) + 2x
x = 9
if y varies directly as x and the constant of proportionality is 3/8, what is the equation that represents this relationship?
y = 3/8x
What is the range of (1,0)(8,2)(7,2)(8,2)(6,2)(7,3)
R:{0,2,3}
solve h/-3 > 6
h > -18
Origin