Question

If you help me, I'll help you....I'm not good at math...please....

Select the best possible first step to solving the following system by first eliminating the y variable.

6x - 5y = -7
10x + 3y = -1

Answer options:

Multiply the first equation by 3 and multiply the second equation by 5.

Multiply the first equation by 3 and multiply the second equation by -5.

Multiply the first equation by -3 and multiply the second equation by 5.

Multiply the first equation by 7 and the second equation by -7.

Answer 1

hey.. how are you?

Answer 2

Awful

Answer 3

Multiply the first equation by 3 and multiply the second equation by 5.

Answer 4

if we do so we have :
18x - 15y = -21
50x + 15y = -5
then if we add the equations we will eliminate y :)

Answer 5

Thank you, really

Answer 6

I got B, but I didn't see the -5

Answer 7

I've been ill, and having to catch up is the worst, especially if you're not good at math

Answer 8

in fact B is a possibility ! but then you will have to multiply the equation by a negative number
which is not nice as multiplying by a positive one
and then you will have to subtract the equations and not add them

Answer 9

so option A is easier

Answer 10

Thank you love :)

Answer 11

Do you mind helping me more?

Answer 12

I'll show you my answers

Answer 13

sure ill help you

Answer 14

Thank you:)))

Answer 15

I'm stuck on this one:

Answer 16

Choose the system of equations which matches the following graph:

Answer 17

5x + 2y = -147x + y = 7

5x + 2y = -147x - y = 7

5x - 2y = -147x + y = 7

5x - 2y = -147x - y = 7

Answer 18

My answer's B

Answer 19

both graphs have the point (0,-7)

Answer 20

so we can eliminate the first one since plugging 0,-7 gives false statement : 7x + y = 7
-7 =7 ..

Answer 21

we can eliminate the third: 5x - 2y = -14 7x + y = 7
14 = -14
and the fourth : 5x - 2y = -14 7x - y = 7
14 = -14

Answer 22

so yes.. answer is B :)

Answer 23

Yes, I have that figured out, except where I'm confused at is whether we'd be adding or subtracting in the firs portion

Answer 24

first*

Answer 25

!!!!!!!!!!!!!!!!!!!!!!!!:)))))))))))))))))))))))))))))

Answer 26

I got it right!!!!!!!

Answer 27

I have another one to check. it's inequalities...which I'm disturbingly horrible at

Answer 28

Choose the system of inequalities that matches the graph below: