09/06/2026
Parallel lines = same gradient. Every time! 📉
Edexcel GCSE mock prep:
Find the equation of the line through C(0,3) parallel to AB.
➡️ A(0,−2), B(−4, 2)
➡️ Gradient m = (2−(−2)) ÷ (−4−0) = 4÷−4 = −1
➡️ y-intercept = 3
➡️ Equation: y = −x + 3 ✅
Gradient + y-intercept. That’s all you need! 💡
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