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Gemiola [76]
2 years ago
10

Write an equation of a line perpendicular to the line 1/2x - 5 , passing through the point (-1 , 7)

Mathematics
1 answer:
jok3333 [9.3K]2 years ago
7 0
<h3>Answer ↓</h3>

y=-2x+5

<h3>Calculations ↓</h3>

First of all we need to determine the slope of the line perpendicular to y = 1/2x - 5 .

The slopes of perpendicular lines are opposite reciprocals.

So we take 1/2 , turn it over , and change it's sign :

^1/_2\:\:\:--- > ^2/_1\:\:\:--- > 2\:\:\:--- > -2

The slope of the line perpendicular to y = 1/2x-5 is -2 .

Since we're also given a point that the line crosses , we can write the line's equation in point - slope form :

y-y₁=m(x-x₁)

y-7=-2(x-(-1)

y-7=-2(x+1)

Now convert to slope intercept :

y-7=-2x-2

add 7 on both sides :

<h3>y = -2x+5</h3>

\footnotesize\text{hope\:helpful}

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+(-6) + (-8)= -4<br> What’s the missing number???
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In general, if we have an equation that has just one variable, such as x, then "solving the equation" means finding the set of all values that can be substituted for the one variable to produce a valid equation.

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A jar of natural peanut butter normally cost $4.00. Today its on sale for $3.60. What is the percentage of the discount
mafiozo [28]

Answer:

Ambitious

Answer

Find out the what is the percentage of this discount .

To prove

Formula

Discount = Marked price - selling price

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a jar of natural peanut butter normally costs $4.00 .

it's on sale for $3.60 .

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put the value

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