Please help me with this and explain how you got the answer thank you

Choose the correct slope of the line that passes through the points (1, -3) and (3, -5)

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

Match each statement with its corresponding value for the system below: y = -2(3)x and y = 9x - 2 1. the number of points of intersection. -2 2. the x-coordinate of the solution. 1 3. the y-coordinate of the solution. 0