Systems of Equations
Linear Equations Graph
Exponents
Percent Decimals Fractions
1-3 step equations
100
How many solutions are there for this systems?
x + y = 2
2x + 2y = 4
Infinite solutions
100
Is this a linear equation?
No
100
100
1
100
What is 17% in decimal form?
.17
100
3x + 5 = 20
x = 5
200
What are the two different ways of solving systems of equations called?
Elimination and Substitution
200
How do you find slope from 2 coordinate points?
y2-y1
_____
x2-x1
200
8-2
1/64
200
Convert 180% into fraction and decimal
180/100
or
1 and 8/10
and
1.8
200
7x + 2 = 16
x = 2
300
y = 2x
3x + y = 30
(6,12)
300
What is the slope and y intercept?
y = 8x
slope = 8
y intercept = 0
300
Rewrite this in scientific notitation
124,400,000
1.244 × 10⁸
300
If jack ordered a pizza and ate half of it at 3pm and ate half of that half at 4pm. How much of the pizza does he have left. Write it in decimal , fraction, and percentage form
.25
1/4
25%
300
3x + 5 = 0
x = -5/3
400
x - 7y = -11
5x + 2y = -18
(-4,1)
400
What is the slope and y intercept?
6y = 16x - 12
slope = 8/3
y intercept = -2
400
Convert this scientific notation back to the normal form
3.292 x 10-6
.000003292
400
A company's employees are divided into three divisions: Administration, Sales, and Tech.
40% of the staff are in Administration.
60% of the remaining employees are in Sales.
The remaining 24% employees are in Tech.
What is the total number of employees in the company?
100 employees
400
5x + 6 = 2x + 9
x = 1
500
What are the solutions to this systems?
3x - 5y = -3
4x + 2y = 0
x = -3/13
y = 6/13
500
Graph 3y= 9x - 12
y intercept at -4, and then slope of 3
500
(4.2 x 108) + (3.1 x 107)
______________________
(2.0 x 10-4) x (5.0 x 106)
4.51 x 1017
500
A stock drops by 25% in January. In February, it increases by 40%, and in March, it drops by 10%. What is the net percentage change in the stock's value over these three months?
5.5% decrease
500
2(3+4x) -2 = 3 -5(1-x)
x = -2