Question

Find an equation of the line containing the given pair of points.

(2,1) and (6,4)

Did I figure this out correctly?

Answer 1

Find slope using the formula (y2-y1)/(x2-x1)
Then use it along with one of the points to find eqn of line using slope point formula: y-y1=m(x-x1)

Answer 2

I was posting the work so I could see if I did it correctly.

Answer 3

sure go ahead

Answer 4

m=\[4-1 \over 6-2\]

Answer 5

I thought you were going to use y = mx + b

Answer 6

Which would then be, 4-1 which is 3 and 6-2 which is 4 so the answer would be \[3 \over 4\]

Answer 7

Lol, why you say that, Hero? I do need to be able to do it both ways right?

Answer 8

Yes, of course :P

Answer 9

yea it can be done both ways, if you want to use y=mx+b then you will have to find b by substituting one of the points for x and y

Answer 10

No, @niravshah08, my way doesn't assume that you know m or b .

Answer 11

I was saying to strictly use y = mx + b to solve the problem. No slope formula.

Answer 12

ohh I misread it

Answer 13

If I used y=mx+b after I found the slope out it would be like this: 4=3/4(6)+b which then would leave me with b = - 1/2

Answer 14

it will be positive 1/2

Answer 15

The answer would be the same if I plugged in the other numbers, which makes the lines parallel.

Answer 16

Yeah, my finger hit the minus sign when I was typing lol. I type too fast sometimes.

Answer 17

lol