How many of these make a semi circle? (view picture) plss fast im being timed)

2

Step-by-step explanation:

there is a quarter of a circle, so two would make a semi circle

   Determine a relationship between the x- and y- values. write an equation.  

x =1 2 3 4  

y = 4 5 6 7Step One: Determine two coordinates written as (x,y)

(1,4) (2,5)

Step Two: Use the formula

Step Three: Simplify to identify the slope

Step Four: Plug your slope (m) into the equation y=mx+b

y = 1x + b

Step Five: Using a coordinate of your choice, plug x and y in to their respective places. (I'm using (1,4))

4 = 1*1 + b

Step Six: Simplify

Step Seven: Isolate b

Step Eight: Rewrite your equation

y = 1x + 3

OR 

y = x + 3

(It's more likely you'll see it written the second way)

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