There are many ways, but here is one:
x = 100
Since ‘x’ is 100 and we want 100 more, we just need to add ‘x’ to 623
Answer: x + 623 (Make sure you define your ‘x’ value)
Answer: x= -7, y= 0
Hope this helped , if it did mark me brainliest pls!
Answer: 
Step-by-step explanation:
It is important to remember the following:

In this case you can observe in the figure that "x" is an Angle formed by two chords, therefore, you can find its value applying the formula.
Therefore, the value of "x" is this:

Answer:
y = -1/3x + 5
Step-by-step explanation:
-1/3 is the slope
5 is the y-intercept