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CAIE IGCSE Mathematics Interpreting Straight-Line Equations

Practise finding and interpreting straight-line equations in gradient–intercept or rearranged forms from points, graphs and tangents.

Syllabus
2028–2030
Course
Mathematics 0580
Level
Extended

Exam points

  • calculate gradient from two points and substitute one point into y = mx + c to find c
  • read the gradient and y-intercept directly after rearranging an equation to y = mx + c
  • form a tangent equation from its measured or derived gradient and a point on the line

E3.5.1 Interpret and obtain the equation of a straight-line graph question 1

[Maximum number: 2]
Figure for Question E3.5.1 Interpret and obtain the equation of a straight-line graph question 1 — CAIE IGCSE Mathematics Extended

Write down the equation of your tangent in the form y=m x+c.

y=
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