❤️MathFollowMeandPracticeeveryday💯🤔️跟我一起做💯🌹Topictoday：Linear

❤️Math Follow Me and Practice everyday 💯

🤔️跟我一起做💯

🌹Topic today：Linear Functions and Lines線性函數和直線

🔑Key words

▶️slope斜率，pass through通過，point點

▶️equation of a line直線方程

▶️xy-plane平面，vertical axis intersection與y軸交點，y軸截距，horizontal水準

▶️parallel lines平行線，same slope斜率相同

▶️perpendicular lines互相垂直直線