How do you write an equation of the line containing the given point (5,8) and parallel to #x+8y=7#?
Change the 7 to an unknown constant, C, substitute 5 for x, 8 for y, solve for C, and then write the equation with the new value of C.
Change the 7 to an unknown:
substitute 5 for x and 8 for y:
The new equation is: