Additional Mathematics – Straight-line graphs | e-Consult
Straight-line graphs (1 questions)
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Midpoint:
- Midpoint formula: \(\bigl(\frac{x1+x2}{2},\frac{y1+y2}{2}\bigr)\).
- Substituting: \(\bigl(\frac{2+8}{2},\frac{3+7}{2}\bigr)= (5,5)\).
Length:
- Distance formula: \(\sqrt{(x2-x1)^2+(y2-y1)^2}\).
- Substituting: \(\sqrt{(8-2)^2+(7-3)^2}= \sqrt{6^2+4^2}= \sqrt{36+16}= \sqrt{52}=2\sqrt{13}\).