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Ch6 test ver A

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 
 
Find the slope of the line.
 

 1. 
mc001-1.jpg
a.
0
b.
 3
c.
2
d.
 mc001-2.jpg
 

 2. 
mc002-1.jpg
a.
 mc002-2.jpg
b.
mc002-3.jpg
c.
 mc002-4.jpg
d.
 – mc002-5.jpg
 
 
Find the slope of the line that passes through the pair of points.
 

 3. 
(–9.3, –2.1), (–5.3, –6.1)
a.
1.3
b.
1
c.
–1
d.
-1.3
 
 
State whether the slope is 0 or undefined.
 

 4. 
mc004-1.jpg
a.
undefined
b.
0
 

 5. 
mc005-1.jpg
a.
0
b.
undefined
 
 
Find the slope and y-intercept of the line.
 

 6. 
y = mc006-1.jpgx + 4
a.
mc006-2.jpg; 4
b.
–4; mc006-3.jpg
c.
4;mc006-4.jpg
d.
mc006-5.jpg; –4
 

 7. 
18x + 4y = –120
a.
mc007-1.jpg; mc007-2.jpg
c.
mc007-5.jpg; mc007-6.jpg
b.
mc007-3.jpg; mc007-4.jpg
d.
mc007-7.jpg; mc007-8.jpg
 
 
Write an equation of a line with the given slope and y-intercept.
 

 8. 
m = 3, b = –1
a.
y = –3x – 1
c.
y = 3x – 1
b.
y = 3x + 1
d.
y = –x + 3
 

 9. 
m = –2, b = –4
a.
y = 2x – 4
c.
y = –2x + 4
b.
y = –4x – 2
d.
y = –2x – 4
 
 
Write the slope-intercept form of the equation for the line.
 

 10. 
mc010-1.jpg
a.
y = mc010-2.jpgx mc010-3.jpg
c.
y = mc010-6.jpgx mc010-7.jpg
b.
y = mc010-4.jpgx mc010-5.jpg
d.
y = mc010-8.jpgx mc010-9.jpg
 

 11. 
Use the slope and y-intercept to graph the equation.
y = mc011-1.jpgx + 2
a.
mc011-2.jpg
c.
mc011-4.jpg
b.
mc011-3.jpg
d.
mc011-5.jpg
 
 
Find the x- and y-intercept of the line.
 

 12. 
–10x + y = 80
a.
x-intercept is –8; y-intercept is 80.
c.
x-intercept is 80; y-intercept is –8.
b.
x-intercept is –10; y-intercept is 1.
d.
x-intercept is 1; y-intercept is –10.
 

 13. 
–3x + 4y = 48
a.
x-intercept is 12; y-intercept is –16.
c.
x-intercept is –16; y-intercept is 12.
b.
x-intercept is –3; y-intercept is 4.
d.
x-intercept is 4; y-intercept is –3.
 
 
Match the equation with its graph.
 

 14. 
6x – 6y = –36
a.
mc014-1.jpg
c.
mc014-3.jpg
b.
mc014-2.jpg
d.
mc014-4.jpg
 

 15. 
–7x – 5y = 35
a.
mc015-1.jpg
c.
mc015-3.jpg
b.
mc015-2.jpg
d.
mc015-4.jpg
 
 
Graph the equation.
 

 16. 
y + 2 = mc016-1.jpg(x – 4)
a.
mc016-2.jpg
c.
mc016-4.jpg
b.
mc016-3.jpg
d.
mc016-5.jpg
 

 17. 
y – 2 = mc017-1.jpg(x – 3)
a.
mc017-2.jpg
c.
mc017-4.jpg
b.
mc017-3.jpg
d.
mc017-5.jpg
 
 
Write an equation in point-slope form for the line through the given point with the given slope.
 

 18. 
(8, 9); m = mc018-1.jpg
a.
y – 8 = mc018-2.jpg(x – 9)
c.
y – 9 = mc018-4.jpg(x – 8)
b.
y + 9 = mc018-3.jpg(x – 8)
d.
y + 9 = mc018-5.jpg(x + 8)
 

 19. 
(–2, –6); m = mc019-1.jpg
a.
y – 6 = mc019-2.jpg(x + 2)
c.
y – 6 = mc019-4.jpg(x – 2)
b.
y + 6 = mc019-3.jpg(x + 2)
d.
y + 2 = mc019-5.jpg(x + 6)
 
 
Are the graphs of the lines in the pair parallel? Explain.
 

 20. 
y = mc020-1.jpgx + 6
6x – y = 15
a.
Yes, since the slope are the same and the y-intercepts are different.
b.
Yes, since the slope are the same and the y-intercepts are the same.
c.
No, since the y-intercepts are different.
d.
No, since the slopes are different.
 

 21. 
y = 4x – 3
–14x + 2y = 28
a.
No, since the y-intercepts are different.
b.
No, since the slopes are different.
c.
Yes, since the slopes are the same and the y-intercepts are different.
d.
Yes, since the slope are the same and the y-intercepts are the same.
 
 
Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.
 

 22. 
y = mc022-1.jpgx + 5
6x – 7y = 4
a.
perpendicular
b.
neither
c.
parallel
 

 23. 
y = mc023-1.jpgx + 2
4x – 12y = 8
a.
parallel
b.
neither
c.
perpendicular
 
 
Write the equation of a line that is perpendicular to the given line and that passes through the given point.
 

 24. 
–6x + 3y = 16; (10, 8)
a.
y = mc024-1.jpgx + 13
c.
y = mc024-3.jpgx + 13
b.
y = mc024-2.jpgx + 13
d.
y = mc024-4.jpgx + 14
 

 25. 
x – 6y = –21; (–8, –7)
a.
y = mc025-1.jpgx – 55
c.
y = mc025-3.jpgx – 50
b.
y = mc025-2.jpgx – 55
d.
y = mc025-4.jpgx – 55
 



 
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