Question

Can anyone help me with this problem. Find an equation of the given pair of point.s Express answer in form of x=a,y=b, or y=mx+b (-7,-7) and (5,5)

Answer 1

First you need to find the slope

Answer 2

(5 - -7)/(5 - -7)
(5 + 7)(5 + 7)
12/12
1

So slope = 1

Answer 3

so the equation is f(x)=x

Answer 4

Then you use this formula
(y - y.) = slope(x - x.)

My "." usually have a subscript of 1 but I don't know how to make that happen.

The y. and the x. are the x's and y's that you you know. You pick one point and use those values. I am going to use the (5,5) point

Answer 5

(y - 5) = 1(x - 5)
y - 5 = x - 5 add 5 to both sides
y = x This is your answer