Math Is Fun Forum

What's the answer and how did you get it? I would like to understand how to do these problems without help. I just don't get it because I don't know how you do it if there isn't anything put for y.

Okay, so I understood what i was told in the last post that I posted, so I sent that work to my teacher.
For #2 and #5, I had been given the slope intercept form but I actually need point-slope form. So if somebody could get the answer to #2 and #5 and explain to me how they did it I would greatly appreciate it. Then on #12, she just simple said it was wrong and needs revision. I'm lost on that one and don't understand it..

2. Slope equals 2 and the line goes through the point (-1, 3)

(I need point-slope form)

5. The line goes through the points (1/2, 3/2) and (-1/4, 5/4)

(I need point-slope form)

12. Find the slope-intercept form of the equation that goes through these two points.

(The two points are 1,115.00 and 2,83.00.)

Okay, so I've already done these questions a couple times and my teacher keeps telling me they're wrong without really telling me what I need to fix, just telling me where I messed up, the problem is I don't know how to do these problems correctly. So I'm coming here now!

The questions:
2. Slope equals 2 and the line goes through the point (-1, 3)
y + k = m(x - h)

(So for that one they just want you to get h and k and put 2 for the slope. I don't know how you find h and k with -1 and 3.)

5. The line goes through the points (1/2, 3/2) and (-1/4, 5/4)

(You have to do the same thing on this one, they just don't give you a slope.)

12. Find the slope-intercept form of the equation that goes through these two points.

(The two points are 1,115.00 and 2,83.00.)

So, I need somebody to give me the answers to those three problems and explain to me how they got the answer, because I want to understand how to do these problems, not just get the answer.

Thank you!

Okay, so I started reading the next lesson and a couple questions came up that I was hoping I could verify here.

The lesson states:

"Example 1: 2x + 3y = 6

  Step 1: put zero in for x and solve for y.

  2(0) + 3y = 6

  Simplify 2(0)

  0 + 3y = 6

  Simplify 0 + 3y

  3y = 6

Solve for y

3y =6

3    3

y = 2

The point is (0, 2)"

Thank you!