Functions
what is a type of function?
A linear,quadratic,cubed,abslute,value
5x-2=3x+4
x=3
x-5=0 or 3x-1<8
x>5 or x<3
3(2x-3)=15
x=4
f(x)=3x-2 if x=-2
-8
what is a function?
an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
15+6x=45+8x
x=-15
what is a compound inequalities?
Compound inequalities are inequalities that have been joined by the words “and” or “or.”
4a+8=3a+10
a=2
f(x)=2x+1 if x=1.5
=4
when you evulate a fraction can it be a fraction?
yes.
5x+1=3x+5
x=2
How do you solve for a compound inequality?
We solve each inequality separately and then consider the two solutions.
5+10(a+2)=35
35
p2+2p h(p)=2+2p=h(4)
=24
abslute value.
9n-6=5n+18
n=6
3x+1>10 and 2x+2>7
x>3 and x<0
-4(-3n-8)=10n+20
n=-6
what do you do in function evulation
your finding the value of x
what function is shaped like a line?
linaer.
3x+7+x=5x-9
x=-16
how many answers do you get?
2
4x+9=2x-9
x=-15/2
how do you find the x value?
Set f ( x ) equal to the y -value you've been given, and solve the equation for x