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chubhunter [2.5K]
3 years ago
6

What is a zero of the function f(x) = 5x-20

Mathematics
1 answer:
Svetlanka [38]3 years ago
7 0
That is where the function equals 0
0=5x-20
add 20 both sides
20=5x
divide 5
4=x

the zero is at x=4
(4,0)
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(A) \boxed{\bold{y=\frac{3}{7}x+\frac{2}{7}}}

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\bold{-1=\frac{3}{7}\left(-3\right)+b}

b = \bold{\frac{2}{7} }

(B) 4 = x, 2 = y

2 = 3/7 * 4 + 2/7

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