1. solve the following pair of simultaneous equations.
6f + e = 23
2e - f = 7
2. Solve the question 1 above graphically, i.e using straight line graphs. Show all relevant points
from equation 1 e=23-6f sub 1 into 2. 2(23-6f)-f=7 46-12f-f=7 46-7-12f-f=0 39-11f=0 39=11f then u divide both side by 11 therefore f=3.55 subtitude f in 1 6(3.55)+e=23 21.3+e=23 e=23-21.3 e=1.7
Answers
slan
from equation 1 e=23-6f
sub 1 into 2. 2(23-6f)-f=7
46-12f-f=7
46-7-12f-f=0
39-11f=0
39=11f
then u divide both side by 11
therefore f=3.55
subtitude f in 1
6(3.55)+e=23
21.3+e=23
e=23-21.3
e=1.7
pastorzay
1.7 is the correct answer.