Find an equation of a parabola satisfying the given conditions.Vertex (0, 0), focus (0, 4)
A. x2 = 16y
B. x2 = 4y
C. y2 = 16x
D. x2 = 
y
Answer: A
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Solve.The sum of the squares of the digits of a positive two-digit number is 13, and the units digit is 1 more than the tens digit. Find the number.
A. 23 B. 43 C. 34 D. 32
Indicate whether the graph represents a one-to-one function.
A. Yes B. No
Factor completely, or state that the polynomial is prime.9x5 - 9x
A. 9x(x4 + 1)(x2 + 1)(x + 1)(x - 1) B. 9x(x2 + 1)(x2 - 1) C. 9x(x2 + 1)(x + 1)(x - 1) D. prime
Graph the quadratic equation. Identify the vertex and the intercept points with their coordinates.y = x2 - 4
A. Vertex: (0, -4);
x-intercepts: none;
y-intercept: (0, -4)
B. Vertex: (0, -4);
x-intercepts: (-2, 0) and (2, 0);
y-intercept: (0, -4)
C. Vertex: (0, 4);
x-intercepts: none;
y-intercept: (0, 4)
D. Vertex: (-4, 0);
x-intercept: (-4, 0);
y-intercept: (0, 16)