Literal Equations
2x + c = y, solve for c.
c = y - 2x or c = -2x + y
f(x) = 2x, x = -5
-10
Solve for y.
x + y = 4
y = 4 - x
or
y = -x + 4
Is this a function?
Domain: [1,2,3,4,5,3]
Range: [-2,-3,-3,4,6]
No, domain is duplicated.
How old is Mrs. Wahl?
37
PE = mgh, solve for h.
h = PE/mg
g(x) = 4x + 7, x = 5
25
What is the ordered pair if...
x + y = 4, when the domain is 5.
(5,-1)
Name 3 ways to determine if a relation is a function
Vertical Line Test
No Domain Repeats
One Input per Output
How many student art works are on the wall?s
13
mx + b = 2mx + y, solve for y.
y = -1mx + b
h(w) = -x2 + 4, w = 5
No solution... x not w!
**100 Extra points- evaluate : h(w) = w2 + 7, w = 5
What direction is x and what direction is y?
x = horizontal or side to side
y = vertical or up and down
Is the following a function? Why or why not?
h(x) = 2y + 3
No, there is no x variable represented, only a y.
What is a male turkey called?
Tom or Gobbler
r = td, solve for d.
d = r/t
g(x) = 3(x-2)+ 5x - 7, x = 4
19
Where is the ordered pair (-3,2)
a. Quad. 1
b. Quad 2
c. Quad 3
d. Quad 4
b. Quad 2
f(x) = 2x2 + 5
Yes
What is a female turkey called?
Hen
A = (1/2)*bh, solve for h.
h = (2A)/b
f(x) = 3x(4-8) + x(3-5), x=1
-16
Given D:[-1,5, 11]
What is the Range of the function y = 2x
Range: [-2, 10, 22]
Write a function for the given points:
(1,3)
(2, 6)
(3, 9)
f(x) = 3x
How many school days until Winter Break?
35