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Unformatted text preview: Leek“) ””1 MTH 1825 see. 006 — Quiz #3 Name (print) KQY
Wednesday, Oct. 6, 2010
20 points Signature Show your work on any problem which is worth more than 1 pt. , was §
1. (1 pt.) True (alse circle one). The relation {(3,5),(6,7),(3,8)} is a function. jmﬁ E
WM,/ (0 M; 7 {we oﬁpuﬁ _ “t , 2. (3 pts.) Find the domain of f (x) = x 2. Write your answer in interval notation. :er? x + ‘
X r 3 % o my; if: a,
x :1; WE ” 3 3. (3 pts.) Consider the function k(x) = ——‘4x2 —2x +13. Evaluate k(—5). Ms“) was? m3 13 2: ammo + r3 tom'23 Answer "W 7 7 4. (1 pt.) For a function given by y = f (x), which type of intercept is found by solving the
equation f (x) = 0? (Circle the correct choice.) ((13?) yint. 5. (2 pts. each) Solve each system of linear equations using any algebraic method. 5x—3y=7 ﬁgs» \Ox~ (pragm N b y=x+8 wigs?
103: + 6y = 20 »~ \0 x at {a $20 ‘ 16 ._. 2x + 2),
C) “:2: 3‘4 lit) 3;, 2% «tr ’Z (x “+ng €15; a A ’h
(Qﬂigéﬁ; i. ﬁlm“: if) 3L!) :7 «Zx .4» 2:): a” lip < 4“ km; s; ”in iamM‘i‘E Answer W3 Sﬁloﬁon Answer JD?) (nit, it: Q"? misﬁts/is Uri5)) a: M} 6. @931 G l») (4 pts.) Use the substitution method to solve the following system. If you use the addition
method, you Will receive no more than 2 points. 5x+3y=~9v
x+2y=—l3 “”9 X ”5’ W 2%“ i3 X 3 “26‘ EU ‘“ 13
St 2%” “>4“, ngfi” X: like“ l3 ﬁts'3’ Answer X 3’ g} Us” mg CM" (33“?) (4 pts.) Use the addition method to solve the following system. If you use the substitution
method, you will receive no more than 2 points. 7x + 6y = —25 7x «as (0% 2g ﬁx + 25 s m
5x + 2y = _19 swﬁmfwﬂﬂgsgwwg m i3 2% W (D ‘7: 5; “WE X” ”(”5 fx'3”%\
if “:1: ' t l it is V‘
Answer X i if} g, j}? ““ i ’3,» E Score: /20 ...
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 Fall '10
 Cioni
 Algebra

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