Pleaseeeeeeeeeeeee, i need help with this question. See attachment

Question

anonymous · Answer

attachment

mertsj · Answer

What do you need help with?

anonymous · Answer

the first question got the other alredy

anonymous · Answer

are the answers for (i) A(-2, 3), B
(4,6) for (ii) 1/2 0r 0.5 and for (iii) -2

anonymous · Answer

is (iii) -2 0r 4

mertsj · Answer

iii calls for the equation of a line.

anonymous · Answer

ok so the other ok

mertsj · Answer

yes

anonymous · Answer

well it is -2

mertsj · Answer

Do you know what an equation is?

mertsj · Answer

Equations must have an equal sign.

anonymous · Answer

yes i just want to know if the answer is right

mertsj · Answer

Somehow we are not communicating.  The problem says:  Determine the equation of the line which passes through A and B 
Equations of lines look like this:  y = 6x-8 or 3x+2y=4 
So when you say the answer is -2, it makes no sense.

anonymous · Answer

ok y=mx
+c
y=1/2x-4=4-6=-2

mertsj · Answer

The line goes through the point (4,6).  Its slope is 1/2.  If we know a point and the slope, we ought to use point slope form:
$$y-y _{1}=m(x-x _{1})$$

mertsj · Answer

Replace y_1 with 6.
Replace m with 1/2
Replace x_1 with 4

anonymous · Answer

6=1/2(-2-4)=-2

mertsj · Answer

I see you are having trouble with substitution.  I will demonstrate:

mertsj · Answer

|dw:1366850481869:dw|