MATH EQUATIONS ??? Help?

Question

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

(1,3) and (3,4) y= ?

2. Find an equation of the line having the given slope and containing the given point.

m= 7/8, (5,-2)

3. Find the slope if it exist 3x-10y=20

Answer 1

1- (4-3)/(3-1)=1/2=.5=slope

    .5x+b=y

    .5(1)+b=3          .5+b=3       b=2.5

   y=.5x+2.5

2. 7/8x+b=y        7/8(5)+b=-2        35/8+b=-2

    b=-16/8-35/8   b=-51/8

  y=7/8x-51/8

3. -10y=-3x+20      y=3/10x-2

3/10

  

Answer 2

1. y = x+1

2. y = 7/8x + 6.5

3. Sorry, I don't really understand the question

Hope that helps :)