The graph show 2 moving at a constant speed. find the speed of object a in meters per second

Pranza plotted point a in the coordinate plane below.

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)