Find the slope first
slope=(2-1)/(-1+3)=1/4=.25
now use the slope and either point to write in point slope form
y-1=.25(x-2)
y-1=¼x-½
to rationalize all the denominators multiply by the last common multiple, here we get 4
4y-4=x-2
then put in the correct order
x-4y=-2
Answer:
x = -1
Step-by-step explanation:
By graphing x = -1, you will see that the line splits this rhombus in two equal halves
THe answer is, 
And in decemal form it will be, 
Sqaure
rhombus
parallelogram
quadrilateral
hope it helps
Hi!
We can set up a proportion then cross multiply to solve this.

45 x 100 = 4500
4500/18 = 250
The answer is 250
Hope this helps! :)