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Daniel [21]
3 years ago
10

Y=-3/2x+9 2x+2y=16 how to solve it by using substitution

Mathematics
2 answers:
Paha777 [63]3 years ago
6 0
Y=-3/2x+9
or
y+3/2x=9, or 2y+3x=18
2y+2x=16. -
2y+2x=16

x=2
y=6. Hope it help!
ycow [4]3 years ago
3 0
Equation 1)  y = -3/2x + 9
Equation 2)  2x + 2y = 16

Add 3/2x to both sides of equation 1.

1)  3/2x + y = 9

Then, multiply all of equation one by 2.

1)  2(3/2x + y = 9)

1)  3x + 2y = 18
2)  2x + 2y = 16

Subtract.

x = 2

Plug in 2 for x in the first equation.

y=-3/2x+9

y = -3/2(2) + 9

y = -3 + 9

y = 6

So, x=2 and y = 6

~Hope I helped!~
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Answer:

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Step-by-step explanation:

Given as :

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Or, x = 6

Hence The total number of units produced is 6  .   Answer

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3 years ago
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pishuonlain [190]
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well, notice, that equation is in slope-intercept form, thus   \bf y=\stackrel{slope}{2}x+5.

\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}}
{2\implies \stackrel{slope}{\cfrac{2}{1}}\qquad \qquad \qquad \stackrel{reciprocal}{\cfrac{1}{2}}\qquad \stackrel{negative~reciprocal}{-\cfrac{1}{2}}}

so, we're really looking for the equation of a line whose slope is -1/2 and runs through 1,4.

\bf (\stackrel{x_1}{1}~,~\stackrel{y_1}{4})\qquad \qquad \qquad 
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\\\\\\
% point-slope intercept
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Solve the following system of equations using the substitution method.
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