# math

posted by .

A line has a slope of 2. It passes through the point (1,2) and (3,y). What is the value of y ?

Is there like a specific difference I'm suppose to find?
I'm super confused.

• math -

x grows by 2
the slope is 2, so y grows by 4.

so, y=2+4=6

or, more formally,

(y-2)/(3-1) = 2

## Similar Questions

1. ### Algebra

I'm suppose to write an equation with the following information: Line passes through (2,-6) and is parallel to x=8 I know i must use the slope point form the problem is that since x=8 I don not know which is the slope. Please help …
2. ### Math/Algebra do u know how to do slope intercept?

The following problems are in slope,point slope, and slope intercept forms of a line. Could you check these thanks. Find the slope intercept form of a line that passes through these two points (-4,4) and (2,1) Answer: y= -1/2x-2 Find …
3. ### Math 101

Find the equation for each of the following items below: a. A line that passes through (6,26) and has a slope of 3. b. A line that passes though the points (5,5) and (10,20) c. A line that passes through (9,25) and has a slope of -3. …
4. ### math

i have more than one question so if u no any of the answers please tell me 1.) write the point-slope form of the equation of the line with slope -2 passing through the point ( -5, -9). 2.) write the point-slope form of an equation …
5. ### geometry

I would love for someone to check my work on the seven problems that I did. I would be eternally grateful. I am going to list my problems and answers. Even if you only want to check one of them, that would be great. 1. Write an equation …
6. ### Algebra 1

What is the slope of the line that passes through the points (-2, 5) and (1, 4) a.) -3 b.) -2 c.) -1/3 d.) 1/3 I think it's b, but I feel like it could also be a. Please help?
7. ### Math

What is the y-intercept of y = 2/3x + 2? I have to write it out but how?