3x+2y=4 and 2x-4y=8. need with coodinates

The solution set would be (2, -1)

Step-by-step explanation:

To find the solution set, use the elimination method. You can do this my multiplying the whole first equation by 2 and then adding the two equations together.

6x + 4y = 8

2x - 4y = 8

8x = 16

x = 2

Now that we have the value of x, solve for y using either equation.

2x - 4y = 8

2(2) - 4y = 8

4 - 4y = 8

-4y = 4

y = -1

the answer is b

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680