Show all your work to get brainliest award solve by using a matrix {7x+2y=5 {13x+14y=-1

 7x+2y=5;13x+14y=-1 Solution : {x,y} = {1,-1}  System of Linear Equations entered :  [1] 7x + 2y = 5   [2] 13x + 14y = -1 Graphic Representation of the Equations : 2y + 7x = 5 14y + 13x = -1 Solve by Substitution :

// Solve equation [2] for the variable  y  
 

[2] 14y = -13x - 1 [2] y = -13x/14 - 1/14

// Plug this in for variable  y  in equation [1]

  [1] 7x + 2•(-13x/14-1/14) = 5   [1] 36x/7 = 36/7   [1] 36x = 36

// Solve equation [1] for the variable  x  

  [1] 36x = 36    [1] x = 1 

// By now we know this much :

  x = 1   y = -13x/14-1/14

// Use the  x  value to solve for  y  

  y = -(13/14)(1)-1/14 = -1 Solution : {x,y} = {1,-1}  Processing ends successfully

Ithink the correct answer is d.

Ithink the answer is discovery verbs because they are quite similar to the verb 'discovering'