Unit 8
p. 16
LT#1­3: Review of Linear Systems.
CW p.16­17(1­ )
Is the ordered pair a solution to the system?
1a)
{
y = 4x ­ 5
y = ­2x + 3
1b)
{
2x + y = 30
y + 12 = x
(14, 2)
(2, 3)
Solve the Linear System using...
{
x = y + 3
2x ­ y = 5
Table
(solution)
( , )
{
2b)
2a)
Graph
2c)
Equation
y
x
y
x y x
Identify the number of solutions for each system. Explain how you know.
{
3a)
y = 3
x = ­5
{
{
3b)
y + 6 = 2x
4x ­ 2y = 12 {
4)
6)
8)
5)
7)
9)
Unit 8
p. 17
Practice p.18(all)
1. Given the function 2.
f(x) = ­2x + 9, what is the value of f(4)?
4.
Unit 8
p. 18
Suppose y = 4x ­ 1. If the value of the independent variable is 3, what is the value of the dependent variable?
5.
What is the slope of the line The table below shows how 3. What is the slope of a line that passes through the points (5, ­3) and (­7, 5)?
6. A snow­shoveling service offers a basic care package for $10 plus $15 per hour of shoveling. Write an expression that can be used to find the cost, C, for n hours of shoveling.
many books Joey reads each month. How many books can Joey read in 6 months?
Solve the equation for y:
10.
9.
8.
7.
Write an equation in slope­
intercept form that passes through the point (4, ­3) with a slope of ­3.
Write an equation in slope­
intercept form of a line with a slope of ­6 and a y­intercept of ­1.
Write an equation in slope­intercept form of the graph.
11. Graph the equation y = 3x ­ 1.
y
x
13. Write an equation of a 14.
12.
line that goes through Write an equation, in the point (­4, ­7) and point­slope form, of the is parallel to the line line that passes through y = ­3x ­ 4.
the point (­3, 8) and has m =
1
the slope of .
b =
2
(x, y) =
Write an equation of a line that goes through the point (­3, 5) and is perpendicular 1
to the line y = x + 9. 2
m =
b =
(x, y) =
IF Solve the systems using Algebra.
y = ­2
2x ­ 5y = 20
y = x + 2
4x + 3y = ­15
Practice
1­3
4­7
8­11
12­15
16­18
Spaeth
Spaeth
Spaeth
Spaeth
2­3
6­7
9­11
13­15
16­18
Spaeth
Spaeth
Spaeth
Spaeth
CW p.16­17 (1­9)
Practice p.18 (all)
SHOW WORK!
1) Complete Class work
2) Complete Missing Class work
3) Complete Missing Practice
1a) answers
1b) 3) Practice p.18(all)
1. f(4) = 1 2. y = 11
3. ­2/3
4. m = 12
5. 18 books
6. C = 15n + 10
1
7. y = ­5 + x
2
8. y = ­6x ­ 1
9. y = ­3x + 9
10. y = x + 2
11. 1
12. y ­ 8 = (x + 3)
2
13. y = ­3x ­ 19
14. y = 2x + 11
OLD Lesson
Work day
1) Complete missing work
­Need another copy? ­­­see me or my Teacher page
2) Missing IF??? ­Look in your folder­­or go to my teacher page and do it again!
3) Work on missing CW/Practice
­look at Learning Target sheet
4) Complete tonights Review worksheets
Practice