5. The two-by-two linear system

can be solved for x and y as follows:

• Set m =

• d₁ = d - mb

• f₁ = f-me

y = 4

●

ax+by = e

cx + dy = f

Solve the linear system below using four-digit round-to even-arithmetic (e.g. 102.25 rounds to

102.2). What is the relative error in z and y (compared to the actual solution to the system,

which you may find using any method of your choosing - Wolfram Alpha, substitution, etc.)?

1.013r - 6.099y = 14.22

-18.11x + 112.2y = -0.1376