Without graphing, determine whether the graph of the quadratic function opens up or opens down.f(x) = x2 + 4
A. opens up
B. opens down
Answer: A
Mathematics
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Solve the inequality using the x-intercept method or the intersection-of-graphs method. Express the solution set in interval notation.10a + 6 ? 9a + 17
A. (-?, 11] B. (10, ?) C. (-?, 10) D. [11, ?)
Mathematics
Graph the pair of parametric equations by hand, using values of t in [-2,2]. Make a table of t-, x-, and y-values, using t = -2, -1, 0, 1, and 2. Then plot the points and join them with a line or smooth curve for all values of t in [-2,2]. Do not use a calculator.x = t + 2, y = t2 - 1
What will be an ideal response?
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Find the exact value of s in the given interval that has the given circular function value.
; sin s = - 
A. s = 
B. s = 
C. s = 
D. s = 
Mathematics