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Math 251 Quiz 1
Name,--+-IG::....BI?~1----
1. Match the function with its type by drawing a line between the function and its type.
3x
5
- x
2
+ 7 algebraic function
2X2 -5
"./ x
2
- 5
I-Tx
rational function
olynomial function
exponential function
2. Let f(x) = v'x+T,
1
g(x) = -.
x
(a) Find g(x)(f(xf - 1) and state its domain using interval notation.
}(I'""!:'''-)(+-\~\:'' \) -~ (1'+\ _\) ::. ~( .. ) = \
(b) Find (g 0 f)(x) and state its domain using interval notation.
( ~ 0 ~)( ,.: \ -:.. ~ ( ~ )( -\- \) =. -'- ..,.. '" \ > 0 -.-=, ). '>- -\
u '1 ~)C.~\ '\
3. State the transformations to the graph of f(x) given by -2f(x + 1) + 4.
~t-\ Q= ~ \~ '. ~E.flfc(Q ~'60)' ~-I\~\C).
CS c~ VE(2'L ~'l " f~,-cr- 'L.
c:; c-\ ,ft"E'\) lE'i=" \ "'~ cr ..
'5 \"\ ,r: 1\:1> u? L\ U N ~ .
4. Suppose the graph of y = f (x) = C aX passes through the points (2, 0.75) and (-1.6). Find a formula
for f(x). Hint: Substitute the given coordinate pairs in for x and y and solve the...

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