How do you write an equation of the line containing the given point (5,8) and parallel to #x+8y=7#?

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Answer 1 · 2016-12-27T19:54:13

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:

#x + 8y = C#

substitute 5 for x and 8 for y:

#5 + 8(8) = C#

#C = 69#

The new equation is:

#x + 8y = 69#