what is the x-intercept of f(x)=1/3x-4?

2016-06-08 4:18 am

回答 (4)

2016-06-08 5:25 am
x-intercept is when y=0.
y = f(x) = 0
1/3x - 4 = 0
1/3x = 4
x= 4 x 3
x= 12
2016-06-08 4:24 am
the x-intercept is (12,0).
the x-intercept is when y=0. plug y-0 and solve for x.
0=1/3x-4 add 4 to both sides
4=1/3x multiply both sides by 3 to cancel out the 1/3 in front of x
x=12
2016-06-08 4:20 am
0 = ⅓x-4
⅓x = 4
x = 12
x-intercept is 12
2016-06-08 4:20 am
I don't know math


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