Line q is represented by the following equation: 2x + y = 11 which equation completes the system that is satisfied by the solution (3, 5)?
x + 2y = 15
x + y = 15
x + y = 8
x − y = 2

Option (c) is correct.

The other equation of system is x+ y = 8

Step-by-step explanation:

Given : Line Q is represented by the following equation: 2x + y = 11  

We have to find an equation completes the system that is satisfied by the solution (3, 5) .

Since, given (3,5) satisfies the system of equations.

So, (3,5) must satisfies both equation of systems.

For other equation

Put x = 3 and y = 5 i each and check which satisfies the equation.

1) x + 2y = 15

LHS = 3 + 2(5) = 3 + 10 = 13 ≠ RHS.

2) x+ y = 15

LHS = 3 + 5 = 8 ≠ RHS.

3) x + y = 8

LHS = 3 + 5  = 8 = RHS.

4)  x - y = 2

LHS = 3 - 5  = -2 ≠ RHS.

Thus, Only equation (3) satisfies the point (3,5).

Thus, The other equation is x+ y = 8

(3x-8) or (3x+8)

step-by-step explanation:

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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