Question

The point (2, –1) is a solution to which system?
Select one:
a. y = 2x
y = 2x + 1
b. 3x – 2y = –7
2x + 3y = 4
c. x + 5y = –3
3x – 2y = 8
y=1/5x-3/5
d. =3/2x+4

Answer 1

put
x=2
y=-1

Answer 2

so what will it be

Answer 3

Just put the values and you will come to know what it will be...

Answer 4

i think its a am i correct

Answer 5

first u will put those vslues in those equations of option a

Answer 6

you need to test this one point into your given equations.
The purpose of this question is to teach you that this point is only on one of those lines so the only way for you to learn this is to sub x=2 and y=-1 in each case.

Answer 7

ok

Answer 8

actually I see this is a system of equations so therefore it the intersection of the system of equations. You can sub these values into the equations given. It must be true for all of the equations given in order for it to be a solution.

Answer 9

A?

Answer 10

A does not even cross at all, see the 2x in both equations that represents that they are parallel lines. Parallel lines do not cross in Euclidean Geometry. So therefore choice A is considered to be "no solution"

Answer 11

A does not cross and has no solution.

Answer 12

In this what exactly do you have problem.

You have to ,

(x value ,y value)

Substitute the x value given for x and y value for y ,

If both sides are equal then that is the answer

Answer 13

ok then its B

Answer 14

No

Answer 15

so we can cncel out b and a

Answer 16

and D so c is the answer right

Answer 17

am i right

Answer 18

seems like you are guessing, it so pick any of them

Answer 19

you have a 25% chance of being right, if you are trying to get it 100% correct perhaps you should take our advice and sub the x and y vlaue

Answer 20

im not guessing i have a pen and paper

Answer 21

am i correct ir not

Answer 22

well prove to us or me that you are correct
show us your work

Answer 23

simple question stil cant be answered

Answer 24

@ganeshie8

Answer 25

please

Answer 26

3x-2y=-7
3(2-2(-1)=-7
this equals 8

Answer 27

8 does not equal -7 so this can't be the solution

Answer 28

both sides have to be the same

Answer 29

so the answer is D