Question

What is the value of f(4) for the function f(x) = 3x – 5?

Answer 1

replace all copies of x with 4 and evaluate

Answer 2

f(x) = 3x - 5

f(4) = 3*4 - 5

f(4) = ??

Answer 3

f(4)=3(4)-4 =
solve

Answer 4

f(4)=8

Answer 5

no

Answer 6

3*4 = ???

Answer 7

in other words, can you tell me what 3 times 4 is?

Answer 8

12

Answer 9

sorry was away

Answer 10

so its f(4)=12?

Answer 11

without variables 12

Answer 12

@jim_thompson5910

Answer 13

3 times 4 is 12

so

3*4 = 12

and that means

f(4) = 3*4 - 5

turns into

f(4) = 12 - 5

Answer 14

the last thing you need to do is evaluate 12 - 5

Answer 15

7

Answer 16

good, so f(4) = 7

Answer 17

with no variables the answer is 7?

Answer 18

the final answer is 7, yep

Answer 19

can you help me more?

Answer 20

thanks

Answer 21

sure I can help with a few more

Answer 22

What is the slope of the line through the points (2, 0) and (3, -3)

Answer 23

use the slope formula

m = (y2 - y1)/(x2 - x1)

Answer 24

so essentially you're subtracting the y coordinates from each other

then the x coordinates from each other (in the same order)

finally you are dividing and reducing

Answer 25

slope is 3?

Answer 26

very close

Answer 27

double check your work though

Answer 28

see where you went wrong?

Answer 29

no

Answer 30

is it -3

Answer 31

how did you get 3? can you show me your work?

Answer 32

it is -3, hopefully you see why this is?

Answer 33

didnt use - at first thanks for confirming

Answer 34

ah i gotcha