How do you check to see if a relation is a function?
What is vertical line test, x does not repeat
The positive solution to the equation x2 + 4x - 5 = 0.
The product of (x+2) and (x+6).
What is 18r2 - 3r -3
For f(x) = 5 – 2x, find the function value f(-6).
17
The value of b in the quadratic equation -4x2 + 6x + 5 = 0.
Multiply: (9r + 3)(2r - 1)
What is (x + 8)?
f(x) = - 2 x 2 + 6 x - 3
Find f(2)
f(2)= -23
The number of solutions to the quadratic equation 4x2 - 7x + 3 = 0.
The sum of (5x2 + 2x + 4) and (4x2 + 3x +8).
What is 9x2 + 5x + 12?
Find the axis of symmetry of the quadratic equation
y = x2 - 4x + 3.
x=2
The solution to the quadratic equation x2 +18x + 81 = 0.
(f – g)(x) = (2x2 + 3x – 4) – (2x + 3)
2x2 + x – 7
Determine the range of this graph.

All real numbers
The solutions to the quadratic equation 4x2 + 2x - 42 = 0.