Check Up Quiz Answers - Salem City Schools

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Algebra 2 Pre-lB: Gheck Up Quiz for Sections 2'1'2.3
Good Luck!!!
Find the s/ope of the line that passes through the pair of points.
1. (-3, -2), (5,4)
Sa-$r - E =
rn=
Xa-X, 5- 3
b -l3l
;]1
2. A board is leaning against a building so that the top of the board reaches a height of 1B
feet. The bottom of the board is on the ground 4 feet away from the wall. What is the
slope of the board as a positive number
(Hint: Draw a picture of the situation and label it!)
In=
rs -r+
In 1994, schoolunch at Rockwell High School was $1 .20. In 1999, the cost increased to
$Z.ZS. Find the annual rate of change in the price for schoolunch from 1994 to 1999.
(Hint: Make a set of ordered pairs with the information.)
(tnar,t.ao) n. =
(rq qtrQ.a:)
-t'
X.a -X r
2,^3 - t.50
\qqq - tqqLt
frr= .2 \
- r.o5
5
4.
5.
Write an equation of the line with the given
slope: l, y-intercept: -3
=+x-3
Write a linear equation in slope-intercept'form to model this situation;
A taxi driver charges $5 plus $0.30 per mile.
@ LJ'r

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Use fhis scenario for questions 6 - B;
Beach Bike Rentals charges $5.00 plus $0.20 per mile to rent a bicycle.
6. Write an equation for the total cost C of renting a bicycle and riding for m miles.
C - .4 n-, ''Ps
7. Graph the equationeeded to represent the cost at Beach Bike Rentals.
8. What is the cost of rentinE a bike and riding 1B miles
C-.a6t)+g=g.k s 8.ec
9. Write an equation of the line that passes through the pp!!!g wi!!_!he iven slope.
(1,-+),m=3 5= r-nx -r-
L>
x Y _r{ = 3Ca) *!>
-4=-9+$
+1 +9
5--b
10. Write an equation of the line that passes through the pair of points.
(-s, s), (-r,- t)
xY
h-- 11z-'J | -8-8
==
Iz--x r -j --3
-l(4
Z
2
=-$
cJ = rnr2

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11. Write the equationin standard form.
y+6=(x+4)
-t4 -Q
:\=x -2
-X -x
-x 1
12. Write the equation in slope-intercept form.
13.
14.
15.
y+3=3(x-1)
3+ 3=
-3 3x- 3
For questionsl3 and 14, determine whetherthe equation is a linear equation. lf so, write
the equation in standard form.
y*3 = 0
w
8x-9nr=6-3m
{-3.,^^' +3r-.
}.t-kt
1= -3
',^.;-(Q
Graph the equation.
! = 4x-4
+3
x -3=Q
- [p-.^+tn= (c
Wt
=7x-Q
3

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16. Graph the following function using the x- and y-intercepts.. I
4x+4y=a1 -ttx=f
A"\=l
X = -/1
,{= '/1
y-intercept,
@
17 . lf f(*) = 5x + 2, find f(3).
9(a)= =t3> +z
= l5+Z =-
r-]
18.
19.
lf g(x) =xz +4x-5, find g(-4).
lcq)
-*G'r)" +tCO-E
=t(r-tLc-9
ls this relation a function
=-O
4

1$!i
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20. ls this relation a function
v
3 8
5 10
6 6
9 -2
21.
ls this relation a function
v
22.
ls the relation a function
{(5, 3), (2, 8), (-5,-1),(4,7),(5, 7)}
5