Question

medal and fan!!!!!


Two lines, A and B, are represented by the equations given below:

Line A: 2x + 2y = 8
Line B: x + y = 4

Which statement is true about the solution to the set of equations?

It is (8, 4).
It is (4, 8).
There is no solution.
There are infinitely many solutions.

Answer 1

A student is trying to solve the set of two equations given below:

Equation A: x + z = 6
Equation B: 2x + 3z = 1

Which of the following is a possible step used in eliminating the z-term?

Multiply equation B by 3.
Multiply equation A by 2.
Multiply equation B by 2.
Multiply equation A by −3.

Answer 2

hint -3z + 3z = 0

Answer 3

i don't understand?

Answer 4

if you multiply equation A by -3, then add to equation B , what happens

Answer 5

im trying to do it and i cant get the same equation as you

Answer 6

if you multiply equation A by -3, then add to equation B.
how do you get -3z + 3z = 0

Answer 7

Equation A: x + z = 6
Equation B: 2x + 3z = 1

Which of the following is a possible step used in eliminating the z-term?

Multiply equation B by 3.
Multiply equation A by 2.
Multiply equation B by 2.
Multiply equation A by −3.

So you don't care about what can get rid of the x-term, therefore you can eliminate answers B and C. Do you get that part so far?

Answer 8

no it isn't

Answer 9

yeah i got it

Answer 10

-3

Answer 11

right?

Answer 12

yepp thats right :) good job

Answer 13

wait -3(3) equals -9

Answer 14

and can you help with the second one please

Answer 15

the first one

Answer 16

sorry the second one is D

Answer 17

thats okay thnx, can youy help with the first one

Answer 18

I think is D because these two lines actually are the same, technically just the equation x+y=4

then x and y could be everything as long as their sum is 4.

But I am not sure...Sorry