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Calculus
Practice Quiz 81

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1.  For 2x + y = 4, find the slope.
2
-2
4		 2.  For 2x + y = 4, the x-intercept is:
-2
4
2
3.  For 2x + y = 4, the y-intercept is:
4
-2
2		 4.  The equation of the line thru P(-2,2) that is perpendicular to 2x + y = 4 is:
y = -2x + 3
y = -2x - 2
y = 1/2x + 3
5. The distance from P(-2,2) to 2x + y = 4 is:
 (2/5,16/5)
0.4
2.68		 6.  y = 1 / (x2 - 1) is:
odd
neither
even
7.  For y = ( x - 4 ) 1/2 , the domain is:
x is > or = 4
x is = 4
x is < or = 1
8.  Which of these is equivalent to:
-2 < y - 6 < 2
1/4 < 1/y < -1/8
4 < y < 8
1/4 > 1/y > 1/8		 9.  If f(x) = 1/(x2),    f -1(x) = :
1/x
+ or - (x1/2)/x
x2
10. If f(x) = 1/(x2),   f( f -1(x)) = :
1
x
-1
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