For the function #y=-3x+2#, what is the #x#-value that makes #y=8#?

1 Answer
David Drayer · EZ as pi
Aug 15, 2016

#x = -2#

Explanation:

substitute 8 for y in the equation This gives

#8 = -3x + 2#

add #-2# to both sides of the equation and simplify

#8 + (-2) = -3x +2+(-2)#

This gives

#+ 6 = -3x#

Divide both sides by -3

# (+6)/-3# = #( -3x)/-3#

#-2 = x #

Related questions
Impact of this question
774 views around the world
You can reuse this answer
Creative Commons License