Find the equation of (1,2) and its x-intercepts equals its y-intercepts in magnitude but opposite in sign

Me because some of question i don’t understand

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

Describe the relationship between the angles of similar triangles and the sides of similar triangles