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functions and graphs

The symbol f(x) is read ? f of x
Is x = c (is vertical line) a function? No x = c is a graph of a vertical line and does not define a function.
What is the square root of -√16 -4
What is the square root of √-25 √-.25 is not a real number
for a function f(x) = - |x| can the value of f(x) be positive? No.
Is f(x) = √x a straight line? No.
The function (f(x) = x² + 4 crosses the y axis at ? y = 4
Ax + By = C is referred to as the Standard Form
y = mx + c is referred to as the Slope form
If the gradient of a line id given by m=5, what is the gradient perpendicular to it? - 1/5
Created by: hivee