hi

can someone please explain step by step how to solve this question?

im having a hard time following them

15. Determine the equations of two lines that pass through the point (-1, -3) and are tangent to the graph of y = x + 1 16. Two particles have positions at the time t given by s, = 4t - t'and s = 5t - to. find the velocities v, and v At the instant the accelerations of the two particles are equal