Question

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

y = 1 over 2 x + 6
y = 2x + 7
y = 2x + 4
y = 1 over 2 x + 10

Answer 1

hi dude, if you follow this link, it gives you a really good understanding of how to get the equation of a line from 2 points

Answer 2

https://www.mathsisfun.com/algebra/line-equation-2points.html

Answer 3

i did

Answer 4

if you have any further questions once you've read this, happy to help

Answer 5

ok, so first, let's work out the gradient
so what's the equation to get the gradient?

Answer 6

so the gradient (or "slope") is the m value, yeah
so to calculate the slope, we need to subtract the y values from eachother, then the x values from eachother, then divide the y answer by the x answer, yeah?

Answer 7

so start with that: y2 = ?
and y1 = ?

so y2 - y1 = ???

Answer 8

sorry @nuccioreggie .. u still there mate?

Answer 9

if it helps: points are always written as (x,y)
and your points are (2, 8) and (4, 12)

Answer 10

ok so i think its C i just did math on paper

Answer 11

hmmm... okaaay...? so what is the gradient in the equation in C?

Answer 12

or what is the gradient of the line you solved on paper?

Answer 13

yea

Answer 14

no, it was a question dude, im trying to help you get the right answer: what is the gradient of the line you solved on paper?

Answer 15

no that is the right answer C

Answer 16

i did work on my own and got C

Answer 17

u sure dude?

Answer 18

yea what do you think the answer is since ur not so sure

Answer 19

if u did the work on your own then how come you dont understand what the gradient should be, s'all?