Question

What are the intercepts of the line 5x+y=20 ?

A.
x- intercept:4 ; y^1 intercept: 30

B.
x- intercept: ; y^1 intercept: -4

C.
x- intercept: ; y^1 intercept: -20


D.
x- intercept: -20 ; y-intercept: -4

Answer 1

@rebeccaxhawaii

Answer 2

@YoungStudier

Answer 3

first convert into y=mx+b form

Answer 4

to do this, you must subtract the y from both sides, then subtract the 20 from both sides.

Answer 5

from what sides?

Answer 6

\[5x+y=20\]
\[5x+y-20=0\]

Answer 7

\[5x-20=y\]
\[y=5x-20\]

Answer 8

substitute 0 for x to find the x intercept, then substitute 0 for y to find the y intercept.

Answer 9

mm how do i find x?

Answer 10

so if you put 0 in for x,
\[y=5(0)-20\]

Answer 11

that means the x intercept will be at -20.
\[y=-20\]

Answer 12

to find the y intercept, repeat the same process for y, but with a bit more work.

Answer 13

\[0=5x-20\]

Answer 14

\[20=5x\]

Answer 15

dividing by 5,
\[4=x\]

Answer 16

the y intercept is at x=4

Answer 17

so sorry!

Answer 18

I gave you the wrong equation for the line in mx+b (standard equation)

Answer 19

woops sorry restroom

Answer 20

ok
bear with me.
all you have to do is to subsitiute 0 for x to find the x intercept, and 0 for y to find the y intercept.

Answer 21

forget finding the standard form. this is the easiest way.
\[5(0)+y=20\]

Answer 22

\[y=20\]

Answer 23

that is the x intercept.

Answer 24

you mean -20?

Answer 25

what are the x intercepts for b and c?
I earlier stated incorrectly both the x and y intercepts.
\[5x+1(0)=20\]

Answer 26

substiuting 0 for y.
\[5x=20\]
dividing by 5
\[x=4\]
I'm not getting the proper solutions.

Answer 27

ok.

Answer 28

wait one second.

Answer 29

brb

Answer 30

back

Answer 31

neither of the listed solutions are correct.

Answer 32

the intercepts are at y=20 and x=4.

Answer 33

I'll show you the graph.

Answer 34

lets get rid of the ones that are wrong starting from A.ok?

Answer 35

ok

Answer 36

the y intercept can not be at 30. It must be at 20 as when x =0, y=20, thus A must be wrong.

Answer 37

okay... b is next

Answer 38

B. the y intercept can not be -4, as it is 20. Please look at the file I sent.
C. The y intercept can not be -20, as it is positive 20.
D. The y intercept can not be at -4, as it is at 20.
Also, I do not see intercepts for x on B and C.
Is this of the question?

Answer 39

yeah

Answer 40

so they are meant not to have an intercept?

Answer 41

like if it were a horizontal line.

Answer 42

wait on b x is 20
and on c x is -4

Answer 43

my bad lol i left that out

Answer 44

does that help?lol

Answer 45

hello?

Answer 46

so sorry.

Answer 47

busy for a sec.

Answer 48

itz kewl

Answer 49

are you sure the intercept for A is y=30?

Answer 50

noooooo its 20! im so sorry lol

Answer 51

great. Its A then.

Answer 52

Good luck on the rest of your HW.

Answer 53

yay!thanks for the help sorry i put you through all dat xD

Answer 54

It's fine. I'm glad I could help!