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alukav5142 [94]
3 years ago
13

A line passes through (2,8) and (4,12) which equation best represents the line

Mathematics
2 answers:
horsena [70]3 years ago
5 0

Answer: y=2x+4

make a table of both the points, find the difference between each x and y. For this its x=2 and y=4 so 4/2 equals 2 so you have your mx for y=mx+b. So far we have y=2x+b now we just need to find b. Since this is a linear equation all you have to do is go backwards. We have (2,8) and (4,12) so (0,4) would be b since (1,6) is just going down by the mx.

Dmitry [639]3 years ago
4 0

Answer:

y=2x+4

Step-by-step explanation:\solving for the slope you get (12-8)/(4-2)=4/2=2

solving for the y intercept you subtract 4 from 8 because 2*2 is 4 and (2,8) is 2 x values away from the y intercept so 8-4=4 so the y intercept is 4

so y=2x+4

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hello your question is incomplete attached below is the complete question

estimating: Ft( -15,40 ) = ( 1.2 + 1.4 ) / 2 = 1.30⁰c

when the actual temperature is -15⁰c and the wind speed is 40 km/h the apparent temperatures increase by 1.3⁰c  that the actual temperature rises

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Step-by-step explanation:

A) Estimating the values of Ft(−15, 40) and fv(−15, 40)

attached below is a detailed solution

To estimate the value of Ft( -15,40 ) we have to take an average value hence Ft ( -15,40 ) = ( 1.2 + 1.4 ) / 2 = 1.30

and this means that when the actual temperature is -15⁰c and the wind speed is 40 km/h the apparent temperatures increase by 1.3⁰c  that the actual temperature rises

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and this means that when the actual temperature -15⁰c and the wind speed is 40 km/h the apparent temperature decreases by about 0.15⁰c for every km/h that the wind speed

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