A function is a rule in which each ____________ (usually x) yields exactly one ___________ (usually y).
input; output
What is domain?
all x-coordinates
what is range?
all y-coordinates
When we evaluate functions, we substitute the _________ variable and evaluate the expression
input/x-value
Evaluate h(4) for h(t) = -4.9t^2 + 20t + 3.
4.6
Evaluate g(x)= 24 for g(x)= 3x-9
x=11
Is it a function? (-1, 0); (1, 0); (0, 0); (2, 2)
Yes, because each input goes to one and only one output
What is the coefficient? 3xz
3
what is the constant? 2xy+7x+8
8
In the expression 5x^3 – 7x^2 + 4, name the: terms
5x^3, -7x^2, 4
In the expression 5x^3 – 7x^2 + 4, name the: coefficient(s)
5, -7,
Solve for x, 3(x + 2) = 5x + 10
x= - 2
Solve for x, 4x + 5 - 8 = 3x
x= 3
What is the distance formula (the strategy to find the distance between any 2 points )
d= square root of (x2-x1)^2+ (y2-y1)^2
what is the mid-point formula?
(x1+x2)/2; (y1+y2)/ 2
Find the distance between ( -12, 1) & (12, -1)
24.08
