Why are fractions, decimals, and percentages considered rational numbers?

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

Use circumcenter theorem to solve for the given values

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?