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bogdanovich [222]
1 year ago
6

Write an equation that passes through (4,-3) and is perpendicular to y=-2x-4

Mathematics
1 answer:
makkiz [27]1 year ago
5 0

The point is (4,-3) and is perpendicular to y=-2x-4.

The slope is given , m=-2.

For the perpendicular line, the slope is

m_1\times m_2=-1m_1\times-2=-1m_1=\frac{1}{2}

Now, then the general equation is

y-y_1=m(x-x_1)

Substitute the values.

y-(-3)=\frac{1}{2}(x-4)y+3=\frac{1}{2}(x-4)y=\frac{1}{2}x-\frac{4}{2}-3y=\frac{1}{2}x-2-3y=\frac{1}{2}x-5

Hence the equation is determined as

y=\frac{1}{2}x-5

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If you expand out the brackets you get this,

(4+5i)(a+2i) = 4a + (5a)i + 8i - 10

The -10 comes from 5i * 2i.
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Let's group the real stuff together,
and imaginary separately,

(4a - 10) + (5a + 8)i

For this to be purely imaginary,
the real part needs to be zero.

Therefore 4a - 10 = 0

Solve for a.
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so therefor
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5 0
2 years ago
What is the first step?
kogti [31]

Answer:

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-5×1/6+1/6=3/2+1/6

-5×÷5×=10/6/-5x

x=-10/30

<h3> x=-1/3</h3>

8 0
3 years ago
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