I'm pretty sure it's an infinite number of lines
The answer should be 5 degrees. The temperature starts at 8 degrees and decreased to 3 degrees. Therefore you find the missing addend which in this case is 5 degrees. 8-3=5
Point c is quadrant 2,point T is quadrant 1,point R is x axis , point h is quadrant 3
X=0
-23 = x - 23
Step 1 cancel equal terms on both sides of the equation
0=x
Step 2 swap the sides of the equation
x=0