Write the slope- intercept form of the equation of the line through the given point. Through:(3,-1) and (-3,3)

Rita wants to buy sweater that was originally priced at $25 today the sweater is on sale for 40% off the original price what is the sale price of the sweater. rita has a coupon for an addition 10% off the sale price. how much will rita pay for the sweater before taxes

Can someone me and do the problem plz so i can understand it more better

What is the measure of angle tvu shown in the diagram below