Answer:
Step-by-step explanation:
y = a(x + 16)(x + 2)
72 = a(-18 + 16)(-18 + 2)
72 = a(-2)(-16)
72 = a(32)
Answer: y = (x + 16)(x + 2)
58.5
75.6
60.5
78.5
÷you need to find how many parts there are ; 4 + 3 = 7
you then need to divide the number by the parts ; £56 ÷ 7 = £8
1 part = £8
4:3, 4 parts : 3 parts.
4 x £8 = £32
3 x £8 = £24
4:3 = £32:£24
to check your answer ;
add both parts of your final answer , £32 + £24 = £56
The linearfunction is y=2.5x+25
A linear function is a function whose graph is a straightline, that is, a polynomial function of degreezero or one.
As, we know equation of line
y=mx + b
x=number of newspapers
37.5=5m+b...............(1)
also,
75=20m+b....................(2)
Solving (1) and (2) , we get
37.5=15m
m=2.5
and, 75=2.5(20)+b
75=50+b
b= 25
Hence, y=2.5x+25 is linear function.
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