Question

please help. I need to sketch a graph of y=f(x) f(x)=-4x+2

Answer 1

Graphing lines? :)

Answer 2

yes please

Answer 3

...

Answer 4

Graphing lines almost always involve finding two points on the line and just connecting them :)

Typically, the two easiest points to find are the intercepts.
Do you know what intercepts are? ^_^

Answer 5

yes

Answer 6

Well then, what is the x-intercept and y-intercept of this line?

Answer 7

sorry I'm still trying to solve f(x)=-4+2

Answer 8

You mean f(x) = -4x + 2
And yes, that's what I mean, find the intercepts of that line...

Answer 9

-4 on the x line

Answer 10

not quite...
Tell you what, set x = 0, and whatever value y-gets, that's the y-intercept

Answer 11

so i take -4(0)+2

Answer 12

Yup, and the value is...?

Answer 13

2

Answer 14

And that... is the y-intercept :)
So one of the points on the line is (0,2)
Let's mark that out...

Answer 15

Now, find the x-intercept.
This time, set f(x) = 0, and then solve for x.

Answer 16

-4x+2(0)

Answer 17

No, uhh
f(x) = -4x + 2
now set f(x) = 0
0 = -4x + 2
and solve for x

Answer 18

x=2

Answer 19

No... try again

Answer 20

trying -4x+2=0 x=4

Answer 21

-4x = -2
now divide both sides by -4

Answer 22

2

Answer 23

no-2

Answer 24

i do mean 2

Answer 25

It's neither... come on, if x = 2, then
-4(2) = -2
-8 = -2
not true

Answer 26

so i was right with -2...I am horrible with my - signs

Answer 27

-4(-2) = 8 which is still not -2

Answer 28

sorry i hate algebra

Answer 29

so x=8 and my lines are (8,0) for x and (0,2) for y

Answer 30

No... the x intercept would be whatever value you get for x in
-4x = -2
which you still haven't solved yet :P

Answer 31

-2/1

Answer 32

That's the same as -2?

Answer 33

sorry

Answer 34

-4

Answer 35

wrong

Answer 36

sorry i can't do this i give up thank you anyways

Answer 37

https://www.google.com/search?q=-4x%2B2&rlz=1C1CHFX_enUS524US524&oq=-4x%2B2&aqs=chrome.0.69i57&sourceid=chrome&ie=UTF-8