NAME DA「巨

Lesson 4 Ski案案s Praく書ice

S/Ope置血teroep書fo州

State the sIope and the y-intercept for the graph of each equation.

1.y=鯵十4 1;4

4.y=一鯵十3　-1;3

7.y一貌=一1 2;-1

10. Graph a line with a

SIope ofl and a

y-intercept of -4.

y � � � � �

o � � � � �★

2.y=薮-2　2;一2

5・y=÷打5 ‡;-5

8.y十蜜’こ2　重4;2

11. Graph a line with a

SIope of2 and a

y-intercept of -3.

y � � � �イ �

o � � � � �★

PERIOD

3.y=鉱一1 3タ-1

6・y=一才十4 -‡;4

9・y=事-3言;-3

12●薫議書

Graph each equation using the s宣ope and the y・intercept.

13.γ=執-3

16.y=蛮-2

4ま

14.y=-%十l

y � � � � �

y=-X十1

o � � � � �女

17・y=一箪十1∴

y � �� � � � �

l iy=-寧十 �����1

o � �� � � �★

15・γ=尋-2

y � � � �i

i �i �ii

iy=÷x-2

o � � � � �★

y � � � � �

o � � � � �

y �=㌫-3l ���� � � � � �

国書漢は続 ����� � � � � � ■喜田案 ����� � � � � �

CoIIrse 5. Chapter 3 Equations in Two Variables

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NAME DA「E PERIOD

Lesson 5 Ski案!s P細aく暮雪くe

Graph a伽ne Us血g mte作ep書s

State theがand y“intercepts of each細nction. Then graph the flmction.

1.鎚一軍y=15

y � � � � �

1 � � �(5 �0 �

o � � � � � �★

牛丁3)i ���� �

X-inte「cept 5; y-interoept -3

3.癌-㊥′=12

y � � � �

3, �0) � � 1 �( ��� �

o �1I ��� �X

l ��� �

侶2)i ����

X-雪ntercept 3; y-intercept -2

5・紅一計=2y � � � �

/ �

2 � � �( �,3 �)_

○ �′ �� � �X

/i �� � �

竹丁6)- ����

X-interoept 3; y-interoept -6

2・ -吉江砂こ-3

X看interoept 6; y-inte「cept -1

4.枕十も′=一21

軸 � � � �y � � � �

ヽ � � � � � � �

ヽ � � � � � � �

( �3, �0) � �2 � � � � �

o �2 �� � �X

ヽ �( �タ �7 � �

l �� � �

x-inte「cept -3; yintercept -7

6.一雛十yニー2

y � � � �

1 � � � � �

o � �(2,0) ���X

(0 ���� -2) ���

X-interoept 2; y-interoept -2

7. DRINKS Ms. Purdy bought co餓∋e and orange julce for her

Coworkers in her o範ce. She bought # CuPS Of co節ee at $2

per cup and γ CuPS Of orange juice at $1.50 per cup.

Altogether she spent $30. This can be represented by the

function 2# + 1.砂= 30. Graph the function. Then interpret

血e汁andy-intercepts. Samp書e Answer: The

X-interoept indicates that she can buy 15 cups

of co請うe and no cups of o「ange置ulce。

器霊瑞諦誓鶉菩豊霊能2044

y � � � � � � � �

0, �20 � � � � � � ) � � � � �

5 � � � �(1 �5, �0) � � �

e �5 �� � � � � � �よ

ColI博e 3. Chapter 3 Equations in Two Variables

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NAME DA「巨 P巨RiOD

Lesson 6 S南冒営菓s P細aく重ile

W碗e |血ear Equa制ons

Write an equation in point-SIope form and s量ope-intercept form for

each Iine.

1. passes備IrOugh (4, 7), S工ope = 2　　　　2. passes傭ffOu敦l (-2, -1), SIope = 4

y-7=2ぐ-4)

y=2x-1

3・ PaSSeS through (8, -4), SIope = ÷

y十4=中一8)

y=ix-8

y十1=4α十2)

y=4x十7

4. passes偶はOu重ね(1, -3), SIope = -1

y十3=一1(X-1)

. y=-X-2

5・ PaSSeS through (-4, -5), Slope = -言　6. passes地ough (3, -8), SIope = 3

y十5=-評十4)

y=一言-8

y十8=3(X-3)

y=3x-17

7. passes練lrOu班(2, -7), SIope = 3　　　8. passes t血ough (-1, -6), SIope =一4

y十7=3(X-2)　　　　　　　　y+6=-4(X+1)

y=3x-13　　　　　　　　　　　y=-4x-10

48 `ou購e }. Chapter 5 Equations in Two VariabIes

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NAM E DA「巨 PERIOD

」esson 6 Homework PI'al宣iくe

W柵e伽near卸ua章fons

Write an equation in point-S獲ope form and sIope“intercept form for each輪ne.

1. passes t血ough(-5, 6), SIope = 3　-　　2. passes t血ough (6, -6),SIope = 5

y-6=3(X十5)　　　　　　　　　y十6=5(X-6)

y=3x十21　　　　　　　　　　　　y=5x-36

3. passes t血ou軒l (0, 1) and (2, 5)　　　　4. passes仇rough (-5, 9) and (1, 3)

y-5=2(X-2)　　　　　　　　y-9=-「(X十5)

y=2x十1　　　　　　　　　　　　y=-X十4

5. passes through (1, -1) and (2, 0)　　　6. passes throu紅(-3,喜5), SIope = 2

y十1=1小一1)　　　　　　　　　y+5=2(X十3)

y=X-2　　　　　　　　　　　　　y=2x十1

Write the point-S賞ope form of an equation for each Hne graphed.

y-「 =4(X)

y � � � � 4 � � � � �

3 � � � � �

2 1 � � � � �

_4 � � � �0 �1 �2　3　4★

2 � � � � �

9. TEMPERATURE皿e table shows the temperature

at certain hours. Assuming the temperature change

is lineaちW五te an equation in point-SIope form to

represent the temperature y at # hour

y-35=4ぐ一1)

y=-「毎十3)

Ou富→ �/咄料如u富e

1 ��35

2 ��39

10. SP駈D After 2 hours, a Car traVels 70 miles. After 2.25 hours in the same

trip,七he car travels 78.75 miles. W亜e an equation in point-SIope form to

represent血e distance y of the car after # hours.

y-70=35毎-2)

Cou略e 3. Chapte冒3 Equations in Two VariabIes 47

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