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Shkiper50 [21]
3 years ago
11

What is the equation of the line that has a slope of 3 and goes through point (4, 7)?

Mathematics
1 answer:
astra-53 [7]3 years ago
3 0
<span>The slope of the line is equal to (y - 7) / (x - 4)
Then we can set up this equation:
(y - 7) / (x - 4) = 3
y - 7 = 3 * (x - 4)
y - 7 = 3x - 12
y = 3x - 5
This is the equation of the line.</span>
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Multiply 2x-5y= -21 by 3 to make it 6x-15y= -63
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This cancels the y’s out which leaves us with

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x for 6x=-63 equals - 10.5 so x is - 10.5 and for -15x=90, x= -6

Then you plug in x into any equation you’d like to find y.

Let’s plug in - 10.5 into 6x... equation.

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But the correct answer is the first one north. Sorry if I’m doing too much hahah


If I’m confusing here’s the right answer...


6x-15y= -63
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