When graph a linear inequality, we use solid line if the sign of inequality is < or >.it is true or false

False.

We use a solid line when there is an
equal sign in the inequality:

X+5 >= 10.

That statement is false. When graphing a linear inequality, we use a solid line if the sign of the inequality is either "<=" (less than or equal to) or ">=" (greater than or equal to). We use a dashed line if the sign of the inequality is either "<" (less than) or ">" (greater than). The solid line indicates that the line itself is included in the solution, while the dashed line indicates that the line itself is not included in the solution.