Chapter 1a
Which of the following are whole numbers?
27, -12, √81, 0, 5/7, -1.5, √44, 93
27, 0, 93, √81
Which of the following are rational numbers:
27, -12, √81, 0, 5/7, -1.5, 93, √44
What is 27, -12, √81, 0, 5/7, -1.5, 93?
(4,5) (1,5) (3,8) (4,6) (10,12)
What is No it isn't?
Find the x and y intercepts of
y=7x+5
What is (-5/7,0) and (0,5)?
Write the polynomial in standard form. Then classify it by degree and by number of terms and describe its end behavior
y=3x3-x+5x4
What is y=5x4+3x3-x
quartic trinomial
up and up
Simplify:
x(x-y) + y(y-x)
What is x2+y2-2xy
Solve:
3(x+1)=2(x+11)
What is x=19?
Write the equation in standard form with integer coefficients:
the line through (-4,6) and (2,-2)
What is 4x+3y=2?
Write the equation of the line in point-slope form:
(0,0) and (-4,-5)
What is y=5/4x?
Write a polynomial function in standard form for each set of zeros:
x=-5,4,1/2
Solve the inequality and graph:
3(x+1)+2<11
(show your graph)
Solve the inequality and graph
4x > 12 and 7x < 7
What is x > 3 and x < 1?
plus show your graph
Write the equation for the transformation of the graph of y=x2
translated 2 units left and 7 units downWhat is y=(x+2)2-7?
Write an equation for the translation of the graph of y=|x|
with a vertex of (5,2)
What is y=|x-5|+2?
Divide using long division
(9x2-21x-20)/(x-1)
What is 9x-12 R-32
Solve for t:
S = 5r2t
What is t= s/5r2?
Solve the inequality and graph:
5x+10 > 10 and 7x-7 < 14
What is 0<x<3?
and show graph
Graph the function on paper and list the vertex and axis of symmetry:
f(x)=|x+2|-8
What is a vertex at (-2,-8) and AoS x=-2?
(show graph)
Graph the function on paper
y=-x2+3
(show graph)
faces down with a vertex at (0,3)
A cubic polynomial has roots -5 and (-2-2i). What is the third root?
What is -2+2i?
Solve:
-6|h-4|=-24
What is h=8 and h=0?
(show how you did this on the board)
Solve:
3|3x+4|-7=5
What is x=0 and x=-8/3?
Show how you did this on the board
Graph on paper
y<3x+1
(show graph)
line should be dashed and shaded to the right
Graph on paper
y>|x+2|+3
(show graph)
vertex (-2,3) and shaded inside
Find all the real zeros of the function
y=-1/8(x-7)3-8
you CAN do cube roots, and if the # is negative, it stays negative after you take the cube root
What is x=3?