Write the point slope form of an equation of the line that passes through (2,1) and (4,-3)

Which statement is true? the given sides and angles cannot be used to show similarity by either the sss or sas similarity theorems. the given sides and angles can be used to show similarity by the sss similarity theorem only. the given sides and angles can be used to show similarity by the sas similarity theorem only. the given sides and angles can be used to show similarity by both the sss and sas similarity theorems.

Can someone me out here number 4 plz

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.