Mathematics: Find the slope of the line that passes through the points 1.7, -4.5 and (-2 1/5, -2 3/4)

Find the slope of the line that passes through

Ответ:

svarner2001

02.06.2020

1.7a+b=-4.5 => a=-(b+4.5)/1.7
-11/5a+b=-11/4 => -11/5(-(b+4.5)/1.7)+b=-11/4 => (11b-49.5)/8.5+b=-11/4
19.5/8.5b=-11/4+(49.5/8.5) => b=(11*8.5+49.5)/19.5=(93.5+49.5)/19.5 => b=143/19.5
a=-(143/19.5+4.5)/7=143/(19.5*7)+4.5/7 => a=143/136.5+4.5/7

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Ответ:

richardnichol1111

04.05.2021

Mathematics

$\\ \sf\longmapsto 2(3x-7)+4(3x+2)=6(5x+9)+3$

$\\ \sf\longmapsto 6x-14+12x+8=30x+54+3$

$\\ \sf\longmapsto 6x+12x-14+8=30x+57$

$\\ \sf\longmapsto 18x+6=30x+57$

$\\ \sf\longmapsto 30x-18x=6-57$

$\\ \sf\longmapsto 12x=51$

$\\ \sf\longmapsto x=\dfrac{51}{12}$

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Find the slope of the line that passes through the points 1.7, -4.5 and (-2 1/5, -2 3/4)

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