How many two-person committees can be formed from a group of six people,
1 answer:
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Answer:
<em>y = - </em><em> x + </em>
<em> </em>
Step-by-step explanation:
(6, 4)
(1, 8)
m = = -
y - 4 = - ( x - 6 )
<em>y = - </em><em> x + </em>
⇔ y = - 0.8x + 8.8
let the two numbers be x and y
From the first sentence,
xy=24
x+y=10
Then make y in equation 2 the subject of the formular and substitute in equation 1
x+y=10
y=10-x
substituting in equation 2
x(10-x)=24
open the bracket
10x-x^2=24
=-x^2+10x=24
Transfer the constant to the left hand side
=-x^2+10x-24=0
Then factorise completely
Look at the photo above
