5.1
Tell weather the ordered pair is a solution of the system. (8,2); x-y=6 2x-10y=4
its not a solution.
Tell which equation you would choose to solve for one of the variables.
3x-y=0
2x+y=-10
The first equation is easier.
solve the system of linear equations by elimination.
x+2y=13
-x+y=5
(1,6)
Whats the common ratio of the geometric sequence.
4,12,36,108,...
common ratio: 3
not a arithmetic sequence
Simplify the expression.
y3x y-5
Y-2
Tell whether the ordered pair is a solution of system of linear equations.
(-4,-2); y= 2x+6 y=-3x-14
It is a solution of the system.
Tell which equation you would choose to solve for one of the variables.
5x+3y=11
5x-y=5
for solving for y the second equation works better.
solve the system of linear equations by elimination.
-x+y=4
x+3y=9
(-2,2)
Find the common ratio of the geometric sequence.
0.1,1,10,100,...
common ratio:10
not arithemetic.
Evaluate the expression.
6253/4
125
Tell whether the ordered pair is a solution of the system of linear equations.
(-2,1) 6x+5y=-7 2x-4y=-8
It is a solution.
Tell which equation you would choose to solve for one of the variables.
3x+5y=25
x-2y=-6
For solving x, the second question is better.
solve the system of linear equations by elimination.
-3x-5y=-7
-4x+5y=14
(-1,2)
What are the next three terms of the geometric sequence.
5,20,80,320,...
1280,5120,20480
Solve the equation
5x=53x-2
x=1
Solve the system of linear equations by substitution.
-5x+3y=51
y=10x-8
(3,22)
Solve the systems of linear equations by elimination.
3x-30=y
7y-6=3x
(12,6)
What are the next three terms of the geometric sequence.
-3,12,-48,192,...
-768, 3072, -12288
Solve the equation
-4=64-3
No real solution.
Solve the system of linear equations by substitution.
2x=12
x-5y=-29
(6,7)
Solve the system of linear equations by elimination.
11x-20y=28
3x+4y=36
(8,3)
What are the next three terms of the geometric sequence.
32, 8, 2, 1/2,...
1/8, 1/32, 1/128.
Solve the equation.
272x+2=81x+4
x=5