Question

1. y = 1.2x - 4 2.2x + 5 = y

Explanation:

Step1: Substitute y from first equation

Since \( y = 1.2x - 4 \) and \( y = 2.2x + 5 \), set them equal: \( 1.2x - 4 = 2.2x + 5 \)

Step2: Solve for x

Subtract \( 1.2x \) from both sides: \( -4 = x + 5 \)
Subtract 5 from both sides: \( x = -9 \)

Step3: Find y using x = -9

Substitute \( x = -9 \) into \( y = 1.2x - 4 \):
\( y = 1.2(-9) - 4 = -10.8 - 4 = -14.8 \)

Answer:

\( x = -9 \), \( y = -14.8 \)