FALSE. While substitution method works for all systems, it's not always the most efficient. For equations where coefficients are easily eliminated (like in \(2x + y = 7\) and \(x - y = 2\)), elimination is faster. For equations where one variable is already isolated (like \(y = 2x + 1\) and \(3x - y = 4\)), substitution is more efficient. The choice depends on the specific equations.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• Naomi Miselo – 31 pts

• Distance of A Straight Line
• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
• COMMUNICATION SYSTEMS