math?

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In the x-y plane, the line 3x + 2y = 72 intersects the x-axis at x = b, for some number b. What is the value of b ?

Guest Mar 21, 2014

ifrogot1 · Answer 1 · 2014-03-21T04:53:27

b=36 (plug "0" in for "x") Also, it is the y-intercept (y=mx+b).

Melody · Answer 2 · 2014-03-21T08:02:38

pattycakesxD:
In the x-y plane, the line 3x + 2y = 72 intersects the x-axis at x = b, for some number b. What is the value of b ?

the equation of the x axis is y=0

sub in y=0 and find the value of x. (That is the value of b)