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Chapter 13 - Assessment

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 
 
Find the slope and the y-intercept of the graph of the linear equation.
 

 1. 
mc001-1.jpg
a.
slope: –7; y-intercept: 4
c.
slope: mc001-2.jpg; y-intercept: –7
b.
slope: 4; y-intercept: –7
d.
slope: mc001-3.jpg; y-intercept: 4
 

 2. 
mc002-1.jpgmc002-2.jpgmc002-3.jpg
a.
Slope: mc002-4.jpg; y-intercept: mc002-5.jpg
c.
Slope: 4; y-intercept: mc002-7.jpg
b.
Slope: mc002-6.jpg; y-intercept: 7
d.
Slope: mc002-8.jpg; y-intercept: 7
 

 3. 
mc003-1.jpg
a.
slope: mc003-2.jpg; y-intercept: 5
c.
mc003-4.jpg
b.
mc003-3.jpg
d.
mc003-5.jpg
 

 4. 
mc004-1.jpg
a.
mc004-2.jpgmc004-3.jpgmc004-4.jpg
c.
mc004-7.jpgmc004-8.jpg: y-intercept: –7
b.
mc004-5.jpgmc004-6.jpg
d.
mc004-9.jpgmc004-10.jpg
 

 5. 
mc005-1.jpg
a.
mc005-2.jpgmc005-3.jpg
c.
mc005-8.jpgmc005-9.jpg; y-intercept: –6
b.
mc005-4.jpgmc005-5.jpgmc005-6.jpgmc005-7.jpg
d.
mc005-10.jpgmc005-11.jpgmc005-12.jpg
 
 
Graph the linear equation.
 

 6. 
mc006-1.jpg
a.

mc006-2.jpg
c.

mc006-4.jpg
b.

mc006-3.jpg
d.

mc006-5.jpg
 

 7. 
mc007-1.jpgmc007-2.jpgmc007-3.jpg
a.

mc007-4.jpg
c.

mc007-6.jpg
b.

mc007-5.jpg
d.

mc007-7.jpg
 

 8. 
mc008-1.jpg
a.

mc008-2.jpg
c.

mc008-4.jpg
b.

mc008-3.jpg
d.

mc008-5.jpg
 
 
Write an equation of the line in slope-intercept form.
 

 9. 
mc009-1.jpg
a.
y = mc009-2.jpgx + 3
c.
y = mc009-4.jpgx – 3
b.
y = mc009-3.jpgx + 3
d.
y = mc009-5.jpgx – 3
 

 10. 
mc010-1.jpg
a.
mc010-2.jpg
c.
mc010-4.jpg
b.
mc010-3.jpg
d.
mc010-5.jpg
 

 11. 
mc011-1.jpg
a.
y = mc011-2.jpgx + 1
c.
y = mc011-4.jpgx
b.
y = mc011-3.jpgx + 1
d.
y = mc011-5.jpgx
 

 12. 
mc012-1.jpg
a.
mc012-2.jpg
c.
mc012-4.jpg
b.
mc012-3.jpg
d.
mc012-5.jpg
 

 13. 
mc013-1.jpg
a.
y = mc013-2.jpgx + 1
c.
y = mc013-4.jpgx – 1
b.
y = mc013-3.jpgx – 1
d.
y = mc013-5.jpgx + 1
 

 14. 
mc014-1.jpg
a.
mc014-2.jpg
c.
mc014-4.jpg
b.
mc014-3.jpg
d.
mc014-5.jpg
 
 
Write in slope-intercept form an equation of the line that passes through the given points.
 

 15. 
(–1, 4), (3, 8)
a.
mc015-1.jpg 3x – 1
c.
mc015-3.jpg mc015-4.jpgx + mc015-5.jpg
b.
mc015-2.jpg
d.
mc015-6.jpg
 

 16. 
(10, 2), (15, 3)
a.
mc016-1.jpg mc016-2.jpgx – mc016-3.jpg
c.
mc016-5.jpg 4x – 38
b.
mc016-4.jpg
d.
mc016-6.jpg
 

 17. 
(–8, 6), (–4, 5)
a.
mc017-1.jpg
c.
mc017-5.jpg
b.
mc017-2.jpg mc017-3.jpgx + mc017-4.jpg
d.
mc017-6.jpg
 

 18. 
(6, 2), (–4, –8)
a.
mc018-1.jpg 2x – 10
c.
mc018-3.jpg
b.
mc018-2.jpg
d.
mc018-4.jpg mc018-5.jpgx + mc018-6.jpg
 

 19. 
(–1, –1), (3, 15)
a.
mc019-1.jpg mc019-2.jpg
c.
mc019-4.jpg
b.
mc019-3.jpg 3x + 2
d.
mc019-5.jpg mc019-6.jpg
 

Short Answer
 

 1. 
You grew about 15.6 centimeters taller in one year. The table shows your friend’s growth.
Weeks
1
2
3
4
Growth (centimeters)
0.25
0.5
0.75
1
a.   Did you or your friend grow faster? Explain.
b.   In the same coordinate plane, graph equations that represent the growth rates of you and your friend. Compare the steepness of the graphs. What does this mean in the context of the problem?
c.   After 20 weeks, your friend’s rate of growth changed so that at the end of one year you were both 15.6 centimeters taller. How does this new rate of growth compare to your friend’s previous rate of growth? How does it compare to your rate of growth? Use a graph to justify your answer.
 



 
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