Mathematics question solving for matrices

option C

x = 6

y = 4

z = 1

Step-by-step explanation:

Given in the question a matrix in the row echelon form of the augmented matrix.

First Equation

x0 + y0 + z(1) = 1

0 + 0 + z = 1

Second Equation

x0 + y(1) + z(-1) = 3

0 + y - z = 3

y -1 = 3

Third Equation

x(1) + y0 + z(4) = -1

x + 0 + 4z = -1

x + 4 = -1

step-by-step explanation:

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !