Math
posted by S:Please, I just need a check .
I had an assignment containing 45 problems, and I am unsure of 4, can you check and see if the answers are correct?
1. Write an equation of the line containing the given point and parallel line
(5,1), 3x7y=9
My answer was: y=3/7x22/7
2. Find the equation of the line having the given slope and containing the given point: m=6,(7,8)
My answer: y=6x+50
3. Find the slopeintercept of the line that has the given characteristics: slope 8 and y intercept (0,7)My answer was y=8x7
4. Find an equation of the line containing the given pair of points:(5,1)(9,7)
I got: y=3/2x13/2

3 is wrong. Sign error, I think. Others ok