How to write it in slope intercept from

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

The measure of an angle is 117°. what is the measure of a supplementary angle?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line