I have a test tomorrow with a few sample questions that are expected to be on the test that I do not know how to properly do.

1)Find the slope intercept equation of the line passing through the intersection of the lines 2x-4y=1 & 3x+4y=4 and parallel to the line 5x+7y+3=0

2)Find the angle between the lines described by y=3x-5 & 4x+2y=12

3) Find the general form of the equation of the line through the intersection of 5x-2y=2 & 2x-3y=3 and perpendicular to the line through (4,-1) and (1,-6)

4)Calculate the vertex, x intercept & y intercept. State if the vertex represents a maximum or minimum and opening upwards or downwards. y=-3x^2 + 6x + 9

5a) Determine the equation of the line parallel to the x axis and passes through (8,-14)

b)Find the slope-intercept form equation between two points (-8,14) and (-7,-3)

c)Calculate the distance between two points

d) Calculate midpoint between the two points

Thanks in advance!