6. tell whether the lines for each pair of equations are parallel, perpendicular, or neither.
y = -4x + 3
-2x + 8y = 5x - 3

a. parallel
b. perpendicular
c. neither

7. tell whether the lines for each pair of equations are parallel, perpendicular, or neither.
y = -1/4x + 10
-2x + 8y = 6

a. parallel
b. perpendicular
c. neither

8. write the equation of a line that is perpendicular to the given line and that passes through the given point.
y - 4 = 5/2(x + 3); (-3,4)

a. y + 4 = -2/5(x - 3)
b. y - 3 = -2/5(x + 4)
c. y - 4 = -2/5(x + 3)
d. y + 4 = 2/5(x - 3)