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alekssr [168]
3 years ago
9

Is y=2x-1 a function?

Mathematics
1 answer:
nignag [31]3 years ago
4 0

Answer:

It is a function.

Step-by-step explanation:

By definition, a function relates each element in the domain to only one element in the range. This means that each vertical line you draw through the x-axis can intersect the function at only one point. ... y = 2x +1. This is the equation of a straight line with slope 2 and y-intercept 1, so it is a function.

A linear function is two distinct but related notions. So, y=2x-1 is also a linear function.

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Answer:

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Step-by-step explanation:

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3 years ago
Lex was chatting with his friends thomas and mike. He was wondering how much it will cost him to take a taxi from his house to w
UNO [17]

Answer:

$28.3

Step-by-step explanation:

x=rate for 1km

y=initial fee

Mike: $35 for 15km -> 35 = 15x + y

Thomas: $24.50 for 10km -> 24.50 = 10x + y

Using those two equations we see the following:

Mike paid $10.5 more for 5 more km. The initial fee remains unchanged, so we can calculate the rate for 1km, which is 10.5/5=2.1.

35 = 15x + y

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10.5 = 5x

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Using that value with one of the original equations we can calculate the initial fee.

35 = 15x + y

35 = 15*2.1 + y

35 = 31.5 + y

3.5 = y

Mike paid 15*2.1=31.5 ($2.1 for every km) plus the initial fee, his total was $35.

We subtract the 31.5 from the 35(total) and get the initial fee, which is $3.5.

<u>Let's see what Lex will pay:</u>

Km travelled times 2.1 (the rate for 1km) plus 3.5 (the initial fee).

12*2.1 + 3.5 = 28.3

Lex will pay $28.3 for the same taxi company to travel 12 km.

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3 years ago
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Jordan’s father is three times as old as Jordan. The sum of their age combined is 48. How old is Jordan?
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Step-by-step explanation:

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3 years ago
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nignag [31]

Answer:

d = (R+3)(M)

Step-by-step explanation:

d/M - 3 = R

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Hope this helps!

5 0
3 years ago
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