Use the elimination method to solve the following system of equations.
4x - 12y = 0
x + 3y = 7

For this case we have the following system of equations:

To solve, we follow the steps below:

We multiply the second equation by -4:

We add the equations:

Equal signs are added and the same sign is placed.

We look for the value of the variable "x":

Thus, the solution of the system is:

x= 7/2        y = 7/6

Step-by-step explanation:

4x - 12y = 0

x + 3y = 7

Multiply the second by( -4) to eliminate the X variable

4x - 12y = 0

-4x -12y=  -28

ADD BOTH

-24y=-28

Divide both by  -24

y= 28/24

y=7/6

Plug y into  second equation

x + 3y = 7

x+ 3(7/6) = 7

x+21/6=7

x+7/2=7

x=7-(7/2)

x=( 14/2) - (7/2)

x= 7/2

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.

i use my brain for prombles like this maybe you could try it

step-by-step explanation: