Question

Raphael graphed the system of equations shown. y = – 3 y = x – 0.8 What is the best approximation for the solution to this system of equations? (–3.2, –3) (–2.9, –3) (–2.2, –3) (–1.9, –3) Mark this and return

Answer 1

The answer is C (-2.2, -3). 

In order to find the ordered pair we must use what we know from the first equation in the second. We already know that y = -3, so that goes into the second equation. 

y = x - 0.8
-3 = x - 0.8 
-2.2 = x

Answer 2

Given ---›

y = -3

&

y = x - 0.8

So,
=> x = y + 0.8

=> x = -3 + 0.8

=> x = -2.2

Therefore, the best approximation for the solution to this system of equations is = (–2.2, –3)