Simplify (4х – б) + (5х + 1)

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)