How can find the x intercept?

#-1/3x + 7y = 42#

1 Answer
Mar 24, 2018

#"x-int"= (-126,0)#

Explanation:

By definition, an x-intercept has a y-coordinate of 0 so,

#"Set the value of y equal to 0 and solve"#

#-1/3x+7(0)=42#

Multiply both sides by #-3#:
#(-3)-1/3x=42(-3)#

#cancel(3)1/cancel(3)x=-126#

#x=-126#

#"x-int"= (-126,0)#