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Edexcel IGCSE Math A Higher 3.3.HE intersections of graphs

Edexcel IGCSE Math A Higher 3.3.HE intersections of graphs
Edexcel IGCSE Math A syllabusMath A 4MA1First assessment 2018

Practise graph-intersection questions by drawing a suitable line or solving the line and curve equations to find the crossing points.

How this is tested

  • Draw a suitable straight line on a graph to estimate equation solutions.
  • Solve simultaneous line-and-curve equations to find intersection coordinates.
  • Give graph-based solution estimates to the required decimal-place accuracy.

Question 22

The straight line L has equation x+y=5
The curve C has equation 2x2+3y2=210\quad 2 x^{2}+3 y^{2}=210
Find the coordinates of the points where L and C intersect.
Show clear algebraic working.
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