Functions And Relations
Is this a function?
(1,1)(2,1)(3,1)
Yes
If F(x)=x2+3 and Y(x)=x-7
What does (f-y)(x) equal?
x2-x+10
What is (9x+2)+(3x+1) equal to?
(12x+3)
What are the inverse relations {(1,3)(2,9)(8,2)(12,16)(7,8)}
{(3,1)(9,2)(2,8)(16,12)(8,7)}
Solve for x l3xl=5
x1=5/3 x2=-5/3
Is a parabola a function?
Yes
If F(x)=x2+4x-5 and Y(x)=x+5
What does (f+y)(x) equal?
x2+5x
What is (12x+6)-(16x-13) equal to?
-4x+19
what is the inverse function? y=1/9x+2
y=9x-18
Solve for x l9x+6l=33
x1=3 x2=-13/3
Is a circle a function?
No
If F(x)=x2+3 and Y(x)=x-7
What does (f-y)(5) equal?
30
What is (12x-6)(4x+9) equal to?
48x2+84x-54
what is the inverse function? y=1/3x-13
y=3x+39
Solve for x 2l4x+2l+6=14
x1=1/2 x2=-6/4
Is a hyperbola a function?
If F(x)=x2+8 and Y(x)=3x-8
What does (f*y)(x) equal?
3x3-8x2+24x-64
What is (19x4-12x3-10x2+3x+2)+(3x3+9x2+x+1) equal to?
19x4-9x3-x2+4x+3
what is the inverse function y-x=11
y=x-11
Solve for x 2l8xl+3<5
x>-1/8 x<1/8
Is a function always a relation or is a relation always a function?
A function is always a relation.
If F(x)=x2+3 and Y(x)=x-7
What does (f*y)(4x) equal?
64x3-102x2+12x-21
What is (9x2+3x+2)(4x2+5x+1) equal to?
36x4+57x3+32x2+13x+2
what is the inverse function? 4y+2x=15+17
-2x+16=y
Solve for x -8l1/12x+2l-6<5
x<-15/2 x>-81/2