Determine whether the equation defines y as a function of x. y2 = 4 - x2
A. function
B. not a function
Answer: B
Mathematics
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Factor and, if possible, simplify the expression.sec4x + sec2x tan2x - 2 tan4x
A. sec2x + 2 B. 3 sec2x - 2 C. 4 sec2x D. tan2x - 1
Mathematics
Graph the linear inequality.-3x - 5y ? -15
A. 
B. 
C. 
D. 
Mathematics
Decide whether or not the ordered pair is a solution to the equation.x + 4 = 0; (-4, 2)
A. No B. Yes
Mathematics
Find the x- and y-intercepts of f.f(x) = (x - 2)2(x2 - 9)
A. x-intercepts: -3, 2, 3; y-intercept: -36 B. x-intercepts: -3, 2, 3; y-intercept: 36 C. x-intercepts: -2, -9; y-intercept: 18 D. x-intercepts: 2, 9; y-intercept: 18
Mathematics