Ch 3a
Solve by graphing:
3x-y=8
10+2y=4x
Show graph and What is (3,1)?
Solve by graphing:
3x+y=5
x-y=7
What is (3,-4) and show graph
Graph each function on paper. label the vertex and AoS.
y=(x+3)2-2
Show me your graph (Must have 3 points graphed and vertex & AoS written down)
Graph each function on paper. Label the vertex and AoS
y=x2+2x+3
What are the real or imaginary solutions of 2x3+7x2=15x
Solve by substitution:
4y-6=2x
y-3x=9
What is (-3,0)?
Solve by elimination:
11 - 2x = 3y
2x - 7y = -9
What is (5/2,2)?
Factor:
x2-81
What is (x-9)(x+9)?
Factor:
7x2-8x-12
What is (7x+6)(x-2)?
Write a polynomial function in standard form for each set of zeros x=-5,4,1/2
What is 2x3+x2-41x+20?
Graph on paper the solution to the following system
y>x-5
3x+y<-2
show me your graph!
Graph on paper the solution to the following system:
y<2+3x
y>|x-3|
Show me your graph!
Solve the quadratic equation by completing the square (MUST show work):
x2+10x-1=0
what is x=-5 plus or minus the square root of twenty six?
Solve using the quadratic formula, must show work:
x2+4x-3=0
What is x=-2 plus or minus the square root of 7?
Divide using synthetic division:
(x2+3) divided by (x-1)
What is x+1 R4 ?
Graph on paper each system of constraints. List all vertices. Then find the values of x and y that maximize the objective function
x<3 y<7 x>0 y>0
Max for P=2x+3y
What is (3,7)? (show graph and have listed all vertices)
Graph on paper each system of constraints. List all vertices. then find the value of x and y that minimize the objective function
2x+y<30. x+y<20. x>0 y>0
Minimum for C=x+4y
What is (0,0)? (show graph and have listed all vertices)
Simplify (2-i)(-3+6i)
what is 15i?
Simplify
(-2+3i)+(5-2i)
What is (3+i)?
Divide using long division:
(9x2-21x-20) divided by (x-1)
What is 9x-12 R32
Solve the system:
5x+4y-z=1
2x-2y+z=1
-x-y+z=2
What is (0,1,3)?
Solve the system:
x+2y=0
4x-z=4
5y+z=-1
What is (2,-1,4)?
Solve:
-x2+4x=10
What is 2 +/- i sqrt 6
Solve
4x2+1=0
What is x=+/- i/2
Find all the roots:
f(x)=x4+4x3+7x2+16x+12
What is -1,-3, +/-2i ?