Find an equation for the ellipse.Center (0, 0); major axis horizontal with length 20; length of minor axis is 4
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
Mathematics
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Find the slope of the line containing the two given points.
and 
A. 
B. 
C. 
D. 
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Evaluate the expression, given x = -2, y = 3, and a = -4.
A. - 1
B. 
C. 
D. 
Mathematics
Solve the problem.The Phillips curve shows the relationship between the unemployment rate x and the inflation rate y. If the equation of the curve is y = 1 - 
for a certain third world country, then for approximately which value of x is the inflation rate 25%?
A. 50% B. 75% C. 25% D. 37.5%
Mathematics
Find the equation of the parabola corresponding to the given information.The parabola has focus and directrix as shown.
A. x = - 
y2
B. x = 
y2
C. y = 
x2
D. y = - 
x2
Mathematics