Test 2

Question 1

continuity

Answer 1

• draw without lifting hand

- no holes

Question 2

identity function

Answer 2

y=x

line

Question 3

squaring function

Answer 3

y=x^2

parabola

Question 4

cubing function

Answer 4

y=x^3

snake

Question 5

square root function

Answer 5

y=square root x

half of a sideways parabola

Question 6

cube root function

Answer 6

y=3square root x
sideways snake (low first)

Question 7

absolute value function

Answer 7

y= lxl

V

Question 8

graph piece wise functions

Answer 8

• graphing calculator use ( )
• 2nd math
• open circle if greater/less than
• closed circle if greater/less or equal to

Question 9

and in calculator

Answer 9

2nd, math, logic

Question 10

greatest integer aka

Answer 10

step function

• largest integer less than or equal to the given number
• [ll]

Question 11

step function in calculator

Answer 11

y=, math, number, 5: int(

Question 12

open circle

Answer 12

at end of line

Question 13

shift up

Answer 13

+ outside

Question 14

shift down

Answer 14

• outside

Question 15

shift left

Answer 15

+ inside

Question 16

shift right

Answer 16

• inside

Question 17

vertical stretch/shrink

Answer 17

af(x)
a larger than 1=stretch
a less than 1 greater than 0=shrink

Question 18

horizontal stretch/shrink

Answer 18

f(ax)
a larger than 0 less than 1=stretch
a larger than 1= shrinking

Question 19

reflection across the x-axis

Answer 19

-f(x)

Question 20

reflection across the y-axis

Answer 20

f(-x)

Question 21

symmetrical to x axis

Answer 21

can fold across x axis

Question 22

symmetrical to y axis

Answer 22

can fold across y axis

Question 23

symmetrical to origin

Answer 23

can rotate upside down and its the same

Question 24

tell if its symmetrical to x axis algebraically to equation

Answer 24

y is replaced with -y and is the same

Question 25

tell if its symmetrical to y axis algebraically to equation

Answer 25

x is replaced with -x and is the same

Question 26

tell if its symmetrical to origin algebraically to equation

Answer 26

x replaced with -x and y replaced with -y and is the same

Question 27

determine if an equation is even, odd, or neither

Answer 27

• all odd exponents=odd
• all even exponents=even
• both= neither

Question 28

graph translation on test

Answer 28

show +- on coordinates

show new ordered pairs

Question 29

find the intersection of the following interval pairs

Answer 29

U together

“and” what needs to overlap

Question 30

find the domain and range of equation

Answer 30

• think of what the graph looks like

- what can x not be

Question 31

difference quotient equation

Answer 31

f(x+h)-f(x) over h

- use f(x) equation and just (x+h)

Question 32

find g of f and its DOMAIN

Answer 32

simplify completely then find what x can’t be to make numerator or denominator zero

Question 33

if the graphs intersect at exactly one point

Answer 33

• ordered pair

- consistent and dependent

Question 34

if the graph are parallel

Answer 34

• equation doesn’t equal
• no solution
• inconsistent and independent

Question 35

if the graphs are on the same line

Answer 35

• equation equals each other
• infinite number of solutions
• inconsistent and dependent

Question 36

x arbitrary

Answer 36

only for same line/infinite solutions

x, solve for y

Question 37

solve systems with three equations

Answer 37

1. First 2 equation s

2. Second 2 equations using same variable

Question 38

matrix

Answer 38

10
01
- 0=add
- 1= multiply