Find the vertex and axis of symmetry of the graph of the function.f(x) = -2x2 + 4x - 9
A. (-2, -25) ; x = -2
B. (1, -7) ; x = 1
C. (2, -13) ; x = 2
D. (-1, -15) ; x = -1
Answer: B
Mathematics
You might also like to view...
Solve the equation by using the quadratic formula.5x2 - 3x - 8 = 0
A. 
B. 
C. 
D. 
Mathematics
Factor using the formula for the sum or difference of two cubes.125x3 + 1
A. (5x - 1)(25x2 + 1) B. (5x - 1)(25x2 + 5x + 1) C. (5x + 1)(25x2 - 5x + 1) D. prime
Mathematics
Find a general term an for the geometric sequence.a1 = - 
, r = -2
A. an = 
n-1
+ 
B. an = - 
- 
(n - 1)
C. an = - 
+ 
(n - 1)
D. an = - 
? (-2)n-1
Mathematics
Decide whether the equation is conditional, an identity, or a contradiction. Give the solution set.2(25t + 20) = 10(3t + 10)
A. Conditional; {3} B. Identity; {all real numbers} C. Conditional; {-7} D. Contradiction; ?
Mathematics