Show:
2.1-2.2
2.3-2.4
2.5
2.6
BONUS!!!!!
100
Left to right on a graph
What is a positive slope?
100
A Line that is as close as possible to all the data points.
What is linear regression?
100
Any point not on the line
What is a test point?
100
Consists of at least two equations that are solved simultaneously
What is a system of equations?
100
The rate of change of one variable in relation to another
What is slope?
200
Find the slope using the points (2,5) (3,1)
What is m=-4 ?
200
Find the linear equation for the amount of Shoe Box stores using the data points: (1991,25) (1992,30) (1993,35) (1994,40) (1995,45)
What is y=5x-9930
200
Type of line that shows greater/less than or equal to
What is a solid line?
200
Numerically, what is the solution using {y=x+2 , y=2x-5}
Solution: (7, 9)
200
Three forms to write an equation of a line
Slope intercept form Point-slope form Standard Form
300
Write an equation in slope intercept form using the points (4,6) (3,2).
What is y=4x-10?
300
Solve (graphically) 4x + 5=x+2
x= -1
300
Is the inequality y>2/3x+1 using the test points (1,2) true?
True
300
The 2 methods for solving a system of equations algebraically
What is substitution and elimination?
300
Have the same slope and Do not touch
What are parallel lines?
400
Write in point slope form using the points (2,6) (8,10).
y-6=2/3(x-2)
400
Solve graphically: y=2x+3 y=x+6
x= 3
400
This is the shaded area (or side) of the inequality y< 4x-3
Right side
400
Solve algebraically { 3x+5y=2, x-5y=2}
Solution : (1, -1/5)
400
Graphs that are consistent and dependent
What are infinite solutions?
500
Crosses at 90 degree angles and have opposite reciprocal slopes.
What is a perpendicular line?
500
Find the interval notation for -6x+1 > 2x-3
(∞, 1/2 )
500
This is the shaded side (or area)of the inequality y>3/-2x-6
right side (top area)
500
Using the Elimination method solve: { 2x+y=7, -2x+3y=5}
Solution: (2,3)
500
Solve the system of equations: x+y-z=1 4x+2y+z=9 3x+y-4z=3
Solution : (9/4, -5/12, 5/6)