Question

what is the solution set for the following equations ? x = -y and x+2y=6?

is it :

A. -2,2
B. 2, -2
iC. 6,-6
D. -6,6

Answer 1

what is this for?

Answer 2

algebra

Answer 3

thought it would be C but not sure? do you know how to do this?

Answer 4

?

Answer 5

do you know how to do substitution?

Answer 6

kind of but not really...just tell me which choice it would be and then i will worry about the work . i just need to get this answer right . this hw assignment is for a grade and i got a bad grade in math and need to bring it up

Answer 7

how about i tell you how to get there, and you worry about the answer

Answer 8

i tried substitution just now but it didnt get me anywhere

Answer 9

just explain the answer and how you got there

Answer 10

So substitute x = -y into your other equation. Then you get the value for y. Substitute the value of y in either equation.

Answer 11

i did !

Answer 12

i got x=1/2x-3
and y=-1/2x+3

Answer 13

If x=-y you plug =y in for x so-
-y+2y=6
y=6

so x=-(6)
the right answer is C, but im not sure why C and D are the same thing just opposite?

Answer 14

thanks @pinkberry501 !

Answer 15

that's how you would do it^

Answer 16

also had 1 more question : the graph of which equation does NOT pass through the origin?
A. y=x
B. y= -x
C. y=0
D. y=1

Answer 17

since im on the same topic

Answer 18

y=1 doesn't pass through the origin

Answer 19

thanks so much! you are the best!!

Answer 20

thats what i thought

Answer 21

haha no problem!

Answer 22

can i ask u one more question?

Answer 23

Sure!

Answer 24

which equation of the line that is parallel to y=2x-8 passes through the point (0, -3)

A. y= 2x+3
B. y=2x-3
C. y=-1/2x+3
D. y=-1/2x-3

Answer 25

i said D but im not sure

Answer 26

what grade r u in anway by the way?

Answer 27

well you would use y=mx+b
-3=2(0)+b and if the line is parallel the slope would be 2 so i would say B.
-3=0+b You did the opposite reciprocal of the slope (2) which you do
-3=b for a perpendicular line.

Answer 28

oops that got messed up lol & im in 9th grade

Answer 29

same!

Answer 30

but so what answer would it be ?

Answer 31

The answer would be B and oh nice hahaa are you in algebra 2?

Answer 32

nope Algebra 1B

Answer 33

i will tag u in quetions i have since ur smart !

Answer 34

ur a great helper

Answer 35

Haha thanks! I'm in geometry so I could probably help you with most of the questions

Answer 36

when the expressions x^2 -9 and x^2 - 5x+6 are factored, a common factor is:
A. x+3
B. x-3 (i think but not sure)
C. x-2
D. x^2

Answer 37

@pinkberry501

Answer 38

well x^2-9 =(x+3)(x-3)
and x^2-5x+6= (x-2)(x-3)
so yup you're right.

Answer 39

wow! thanks again!