Name_______________________________
Ms. Respol – Q2
Date____________________
9____
Review Topics
Test # 1
•
•
•
•
•
•
•
•
•
•
Sets, Relations, Functions
Graphing Linear Functions
Slope of a line
Intercept of a line
Graphing Linear Functions Using Slope
Slopes of Parallel and Perpendicular Lines
Graphing Direct Variation
Graphing Inequalities
Graphs Involving Absolute Value
Previous Topics
Sets, Relations, Functions
1. Determine the following from the graph
a. The Domain
b. The Range
c. Is the relation a function? Why or Why not.
Graphing Linear Functions
- Graphing the following lines using a table.
1. y = !x + 2
2. x + 2y = 8
Slope of a line
1. What is the slope of the graph of y = !2x + 5 ?
2. What is the slope of the line whose equation is 3x ! 2y = 12 ?
3. What is the slope of the line that passes through points (4, 5) and (6, 1)?
Intercepts of a Line
- Find the y - intercepts and x – intercepts of each line.
1. 4x ! 3y = 0
2.
4x
! 2y = 1
5
Graphing Linear Functions Using Slope
- Graph each equation using the slope and the y – intercept
1. 3y = 4x + 9
2. 5x ! 2y = 4
Slopes of Parallel and Perpendicular Lines
- State whether the given lines are parallel, perpendicular, or neither. Solve for
y if necessary.
1. 4x ! 5y = 20 , 15x + 12y = 60
3.
1
2. y = ! x ! 1 , x + 2y = !4
2
x+y=9
y ! x = 13
Graphing Direct Variation
- y varies directly as x. In each case:
a. What is the constant of variation?
b. Write an equation for y in terms of x.
c. Using an appropriate scale, draw the graph of the equation written in part b
d. What is the slope of the line drawn in part c?
1. Willie averages 3 hits (y) for every 12 times at bat (x).
Graphing Inequalities
- Graph the inequality
1. y ! x > 2
2. 2x ! y " 4
Graphing Involving Absolute Value
- Graph
1. y = 3 x + 1
2. y = x + 1 + 2