How do you find the equation for the line that is parallel to the line y=2/3x-7 and passes through the point (3,-1)

1 answer:

3 0

parallel lines have the same exact slope hmmm what's the slope of y = 2/3x-7 anyway? well, low and behold, is already in slope-intercept form, therefore

$\bf \stackrel{\textit{slope-intercept form}}{y=\stackrel{slope}{\cfrac{2}{3}}x-7}$ .

so we're really looking for the equation of a line whose slope is 2/3, and runs through 3, -1.

$\bf (\stackrel{x_1}{3}~,~\stackrel{y_1}{-1})~\hspace{7em} slope = m\implies \cfrac{2}{3} \\\\\\ \stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-(-1)=\cfrac{2}{3}(x-3) \\\\\\ y+1=\cfrac{2}{3}x-2\implies y=\cfrac{2}{3}x-3$

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Step-by-step explanation:

Let us first start by writing expressions so that we can easily solve for the problems below.

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1. If Alice has 2 apples (x), then Claire has 3x

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2. If Alice has 7 apples (x), then Claire has 3x

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3. If Alice has 10 apples (x), then Claire has 3x

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I hope this helps! Please let me know if you have any further questions :)

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