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

Mathematics

2 answers:

horsena [70]4 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]4 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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Answer:

Step-by-step explanation:

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If f(x) = 4x - 7, what's the value of f(2) ? *<br> O -1<br> O 1<br> O 20<br> O 35

sp2606 [1]

Answer:

Step-by-step explanation:

f(x) = 4x - 7

What does f(x) mean? It means that whatever variable you have on the left which is (x), the same variable must be on the right.

So f(2) means that whatever variable is on the right, it must be replaced with 2 on the right. So .....

f(2) = 4(2) - 7

f(2) = 8 - 7

f(2) = 1