CAIE IGCSE Mathematics Core C3.5 Equation…Graphs

Covered syllabus points

C3.5.1 Interpret and obtain the equation of a straight-line graph in the form

[Maximum number: 2]

Figure for Question 1 — CAIE IGCSE Mathematics Core

Find the equation of line L in the form y=mx+c.
y=

y=2x-5 final answer
B1 for answer of 2x+c or mx-5, $m\neq0$

[Maximum number: 2]

Figure for Question 2 — CAIE IGCSE Mathematics Core

Find the equation of line L in the form y=m x+c.

$y=\frac13x+1$
B1 for $\frac13x+c$ oe, or for mx+1, where m is their gradient and $m\ne0$

[Maximum number: 3]

Point A and line L are shown on the grid.

Figure for Question 3 — CAIE IGCSE Mathematics Core

Find the equation of line L.

y=2x+3 oe final answer
B2 for 2x+3 or y=2x+c, or y=mx+3, $m\ne0$ , where m is their gradient
or B1 for 2x+c, or for mx+3, $m\ne0$ , where m is their gradient

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CAIE IGCSE Mathematics Core C3.5 Equations of Linear Graphs Topic Practice

Covered syllabus points

Question 1

Question 2

Question 3