Roy is arranging photos for a yearbook page. If he has 7 photos to choose from, in how many ways can he pick 2 of them and line them up on the page?

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

What term makes it inconsistent y=2x - 4 ?

With both problems. a.s.a.p directions on photo ^