How do you solve this using additional method elimination
3x + y = 17
4x - y = 18

// Solve equation [1] for the variable  y 
 

// Plug this in for variable  y  in equation [2]

// Solve equation [2] for the variable  x 

// By now we know this much :

// Use the  x  value to solve for  y 

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.