What is the equation, in point-slope form, of the line that is
perpendicular to the given line and passes through the point
(2, 5)?
y + 5 = x + 2
y-2 = x-5
y-5= -(x - 2)
y + 2 = -(x + 5)

Aregular hexagon rotates counterclockwise about its center. it turns through angles greater than 0° and less than or equal to 360°. at how many different angles will the hexagon map onto itself?

How do i do this activity, is appreciated

Evaluate the expression for the given value of the variable 7a - 4a for a =8