Find the y-intercept of the line: 6) $y=5 x-7$

Step 1 ：The y-intercept of a line is the point where the line crosses the y-axis. This is the value of y when x = 0.

Step 2 ：In the equation \(y = 5x - 7\), we can find the y-intercept by setting x = 0 and solving for y.

Step 3 ：Substitute x = 0 into the equation: \(y = 5(0) - 7\)

Step 4 ：Simplify to get: \(y = -7\)

Step 5 ：Final Answer: The y-intercept of the line \(y=5x-7\) is \(\boxed{-7}\)