Solve the quadratic equation by completing the square.x2 - 8x - 7 = 0
A. {8 - 
, 8 + 
}
B. {-4 - 
, -4 + 
}
C. {4 - 
, 4 + 
}
D. {4 - 
, 4 + 
}
Answer: D
Mathematics
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Find the equation of the parabola corresponding to the given information.The parabola has focus ( 0 , -2 ) and directrix y = 2.
A. x = - 
y2
B. y = 
x2
C. y = - x2
D. y = - 
x2
Mathematics
Find the equation of the line satisfying the given conditions, giving it in slope-intercept form if possible.Through (-5, 5), perpendicular to 3x + 2y = -5
A. y = 
x - 25
B. y = - 
x - 
C. y = 
x
D. y = 
x + 
Mathematics
Find the x- and y-intercepts. If no x-intercepts exist, state so.y = -x2 + 15x - 56
A. (-7, 0), (-8, 0), (0, -56) B. (7, 0), (8, 0), (0, -56) C. No x-intercepts, (0, 7) D. (7, 0), (8, 0), (0, 7)
Mathematics
Find the reciprocal, if it exists.-5
A. 
B. 0
C. - 
D. 5
Mathematics