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rodikova [14]
3 years ago
14

X+4y=4 in slope intercept form

Mathematics
1 answer:
MAXImum [283]3 years ago
7 0

Answer:

Slope: −14y-intercept: (0,1)

Step-by-step explanation:

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In New York, state sales tax rates vary by county. In Allegany County, the sales tax rate is 8 1 2 %. A pair of shoes costs $29.
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5 0
3 years ago
Find the equation of the line perpendicular to x−5y=15 that passes through the point (−2,5).
Snowcat [4.5K]
First off, let's solve <span>x−5y=15  for "y".

</span>\bf x-5y=15\implies x-15=5y\implies \cfrac{x-15}{5}=y\implies \stackrel{slope}{\cfrac{1}{5}}x-3=y
<span>
now, notice the function in slope-intercept form, well, it has a slope of 1/5.

now, a perpendicular line to that one, will have a negative reciprocal to that, let's check what that is.

</span>\bf \textit{perpendicular, negative-reciprocal slope for slope}\quad \cfrac{1}{5}\\\\&#10;slope=\cfrac{1}{{{ 5}}}\qquad negative\implies  -\cfrac{1}{{{ 5}}}\qquad reciprocal\implies - \cfrac{{{ 5}}}{1}\implies -5
<span>
so, we're looking for the equation of a line whose slope is -5 and goes through -2,5.

</span>\bf \begin{array}{lllll}&#10;&x_1&y_1\\&#10;%   (a,b)&#10;&({{ -2}}\quad ,&{{ 5}})&#10;\end{array}&#10;\\\\\\&#10;% slope  = m&#10;slope = {{ m}}= \cfrac{rise}{run} \implies -5&#10;\\\\\\&#10;% point-slope intercept&#10;\stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-5=-5[x-(-2)]&#10;\\\\\\&#10;y-5=-5(x+2)\implies y-5=-5x-10\implies y=-5x-5<span>
</span>
4 0
3 years ago
Read 2 more answers
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