Page 4prs 1. Graph 3x 5y 15 t...MATH115 PRECALCULUS 100pts 4pts 8.Find the equation of the line u...
Transcript of Page 4prs 1. Graph 3x 5y 15 t...MATH115 PRECALCULUS 100pts 4pts 8.Find the equation of the line u...
MATH115 PRECALCULUS 100pts TEST 2 FALL2}llPage 1
4prs 1. Graph 3x - 5y : 15 t .ffqph p6.p,l
4ptsZ.If f(x):4x3 + 2x2 + 3x find f(2a)
{.643' a(&,*f LA;}G), ffiffi 6o
ft,q) ''i ./','
4pts 3. Is the following a function? Why or why not?
pts 4. What is the domain and range for the function below?
9,-,,,^,"".t.
./.D
^slntkl,i5,u
R
f(-r= &t)+t -&-,ffCI= (.r)3+& =pg\
[3x+5apt$ s) If f(x) = l, --/ ixi+2
l1 /i'.. .. .-
3l
determine f(-1) and f(a)x<2x>2
5pts r-6) Given f (*) : x2 - 3x + 2 - , f(x)-f(a)TIIIO- x-a
k -o'.-
(r=a*x*$ --V-a-
5pts (f)Given r i"l : i'* s* + 2 find f(x + h) - f(x)
h
C*i@tr-€n
.(x, +&xi.+h1 *,* #, 6 _f$ . a----
n
{x-qTx +q) - 3(x-C\/-#-
k*c-'
./^,;lfl{ ,tY+t'r ],/
-*----*ti ,'a-{-- ' -'} i
i ,lx*tt+ r-l
TNSTRUCTOR: CARLA MORRISNAME: i
.,# pa,coo.c
nh ae{ *tnrtr prlf
MATH115 PRECALCULUS 100pts
4pts 8. Find the equation of the line u
TEST 2 FALL2OIIp.2
INSTRUCTOR: C. MORRIS
passes through (5, 3)
4pts 9. Find the equation of the line passing through (2,1113) and (8, 5/3)tW -?u ---ry -Jla-7 -6 '6- 4-b(rS
3-'u'l'-&x +tTs
4pts 10. Are the lines y = (312)x + 2 and3x - 2y: 6 parallel, perpendicular, or neither?Explain your answer using slopes to guide you.
(\f1a na =7e
5pts 11. Graph f(x):(*-l)2 -q SAtrfAyAAa
5pts 12. Graph f(x)=,,3-8 Se* fl%ryq+7 sea-T?W,7O-rp"-,13.Graphf(x):-lx+21
14. Graph f (x): [4x ]
15. Given f (x): 4xa + 5x3 - 6x and g(x) : 6x4 -2x3
4pts a) Find (f + gxx) foO t,cd*)
@'g-t
3X-at= 6&u =3x -tbq- %x-s
5pts
5pts
8. Find the equation of the line with slope 6
$- 3 = 60,-0
ht=% tO l,rveA
({r{*S.P-qX c,#-af-$
1 @-N-{ +-{G>g-s},e-* *'d,,xr - k
MATH115 PRECALCULUS 100pts TEST 2 FALL 2011p.3
5pts 16. Find f -'(*) if f (x):4x r 3
1--'lxt:X. {tlt3.\:3'{5
5pts 17. Find r-'(*Yirr(*J : -2
Qffila--g = 55
INSTRUCNAME:
l"'(x) = k*z-27-
b=6xr#-ak = (Sh+11--]
(vod; i{e,QJIta --S.d+t
.-- \l\ .4c*
of a diameter (6, 8) and(21,16)
Y-Yr=m(x*x1)
IIlt = IIl2
-'k)= kW- -tt
*fffi-)=y4pts 18. Is the
srHLt€qchx hn: lt a^"a@ y-VAt\
5pts 19. Find the equation of the circle centered at the origin with a diameter of 13 units.
r* 13fuf+6pts 20. Find the
midq+CaNo(
d*.lr+'JEeq: : \l
Some formulas you may need
a=ffi(* - h)2+ (y - k)'= 12
m1 = -llm2
+f - lG%{
/ o+a"rt\tAtqF'(*, t0
( xr+x, yr +yz )12'2 )
Y:mx+b
2r=d