Evaluating Functions

1

100

Evaluate f(x) = x + 5, when f(10)

x = 15

200

Evaluate f(x) = 3x - 2, when f(5)

x = 13

300

Evaluate f(x) = 2x - 6, when f(-10)

x = -26

400

g(x) = 2x - 12 ....................................... 

h(x) = x² - 2x + 3 ........................... 

Evaluate h(-3)

18

500

Evaluate g(x) = x^2 - 10, when g(-5)

x = 15

2

100

In a relation, what do you call the y values or the output?

range

200

g(x) = 2x - 12 ...................................

h(x) = x² - 2x + 3 ........................... 

Evaluate g(-2)

x = -16

300

Evaluate (f . g ) (x) given f(x) = x + 13 and g(x) = x – 13?

x^2 - 169

400

g(x) = x + 5
h(x) = x - 4
Find (g * h)(x)

x² + x - 20

500

f(x) = 3x + 2
g(x) = 2x + 4
Find f(x) * g(x)

6x²+ 16x + 8

3

100

f(x) = 2x + 1 Solve when f(x) = 11

x = 5

200

Evaluate (f * g ) (5) given f(x) = x^2+5x+6 and g(x) = x – 12?

x³-7x²-54x-72

300

g(x) = x²− 2x , 

f(x) = x − 1 

Find g(x) − f (x)

x² − 3x + 1

400

f(n) = n - 5
h(n) = n - 1
Find (f * h)(5)

(f * h)((x)=n2 - 6n + 5

(f * h)(5) = 0

500

g(n) = n 2 − 2 f (n) = 3n + 5 Find g(n) − f (n)

n² − 3n − 7

4

100

g(x) = x + 4

h(x) = 3x

Find (g+h)(-4)

(g+h)(x)=-12

200

g(x)= 2x²+9x+10

h(x) = -4x + 2

Find (g + h)(7)

(g + h)(x) = 2x²+5x+12

(g + h)(7)=145

300

g(x) = x² + 3x]

h(x) = 2x - 3

Find (g+h)(8)

101

400

g(x) = -3x + 1

f(x) = 3x - 2

Find (g - f)(-6) ]

39

500

h(t) = 3t

g(t) = t² - 4t

Find (h - g)(-10)

-170

5

100

 In a relation, what do you call the x values or the input

independent variable

200

Every input has only ONE output

function

300

Find the product, f(x)=3x+2 and g(x) =2x+4, Find (f*g)(x)

6x^2+16x+8

400

f (n) = −2n³ + 3n² and g(n) = −2n − 4 Find f (n) + g(n)

−2n³ + 3n²− 2n − 4

500

Evaluate (f*g)(-2) given f(x)=2x+3 and g(x)=3x-2

8