EduNinja

[Maximum number: 2]

Figure for Question 1 — CAIE IGCSE Mathematics Extended

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

y=

$y=(4.4\text{ to }5.6)x-(1.8\text{ to }2.2)$
OR y= their (b)(ii) x+ their y-intercept.
FT for any line but not horizontal or vertical for 2 marks.
B1FT for m= their gradient or for their y-intercept.

[Maximum number: 2]

Figure for Question 2 — CAIE IGCSE Mathematics Extended

O is the origin (0,0), A is the point (8,1) and B is the point (2,5).

Find the equation of the line AB.

Give your answer in the form y=m x+c.

y=

$y=-\frac23x+\frac{19}{3}$ oe
M1 for gradient $=\frac{1-5}{8-2}$ oe
M1 for substituting (8,1) or (2,5) into y= their mx+c

[Maximum number: 2]

Figure for Question 3 — CAIE IGCSE Mathematics Extended

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

y=

$y=-\frac{3}{4}x+2$ oe

FT their (a) x+2 oe
B1 for their (a) x+c or mx+2

CAIE IGCSE Mathematics Extended E3.5 Equations of Linear Graphs Topic Practice

Question 1

Question 2

Question 3