Help please....I have no idea what I’m doing

Answer:
C) 8
Step-by-step explanation:
Use the formula
Slope = [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex]
[tex]y_1[/tex] - any y value
[tex]x_1[/tex] - x value corresponding to y_1
similarly, you can pick y_2 and x_2 from the table.
Pick any two rows
Let's pick row 3 and 4
Slope = [tex]\frac{33-23}{5-3}[/tex]
=> 10/2
Slope = 5
Now formula
y = slope * x + intercept
y = 5x + intercept
intercept = y - 5x
Now take any row from the table and substitute above to calculate intercept
Taking row 3
intercept = 23 - 5 * 3
intercept = 8