Given $y = 3 x$ $y = 3x$ , what is (0, ) (-1,) (7,) ?

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Given $y = 3 x$ $y = 3x$ , what is (0, ) (-1,) (7,) ?

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Answer 1 · 2018-05-07T10:39:34

$(0, 0), (- 1, - 3), (7, 21)$ $(0,0),(-1,-3),(7,21)$

Explanation:

$to evaluate the y-coordinates substitute the given values$ $"to evaluate the y-coordinates substitute the given values"$
$of x into y = 3 x$ $"of x into "y=3x$

$x = 0 \Rightarrow y = 3 \times 0 = 0 \to (0, 0)$ $x=0rArry=3xx0=0to(0,0)$

$x = - 1 \Rightarrow y - 3 \times - 1 = - 3 \to (- 1, - 3)$ $x=-1rArry-3xx-1=-3to(-1,-3)$

$x = 7 \Rightarrow y = 3 \times 7 = 21 \to (7, 21)$ $x=7rArry=3xx7=21to(7,21)$

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Given $y = 3 x$ $y = 3x$ , what is (0, ) (-1,) (7,) ?

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Given $y = 3 x$ $y = 3x$ , what is (0, ) (-1,) (7,) ?