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3 years ago

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Mathematics

2 answers:

nevsk [136]3 years ago

7 0

Answer:

8x - 15

Step-by-step explanation:

Difference just means subtraction, pretty simple. Also, don't mix up the placement, it could totally flip the equation.

Talja [164]3 years ago

4 0

Answer:

8x - 15

Step-by-step explanation:

You multiply the 8 and x, put the subtract sign, and add the 15, BOOM!

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$13 (?) off the original price of 240 is 229. She will have to pay $229.00

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3 years ago

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gogolik [260]

Answer:

The error is when 6y = 12 it will be -6y = 12 and the intercept would be -2.

Step-by-step explanation:

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1 year ago

What is the area of the semi circle of 12

finlep [7]

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Step-by-step explanation:

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If a chicken lays 16 eggs every 40 days, what is the average number of eggs she lays per day?

Basile [38]

Answer:

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3 years ago

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Find the equation of a line perpendicular to y - 12 = 2x – 8 that passes through the point (2, 3). (answer in slope-intercept fo

Alla [95]

Answer:

$\displaystyle y=-\frac{1}{2}x+4$

Step-by-step explanation:

<u>Equation of a Line</u>

We can find the equation of a line by using two sets of data. It can be a pair of ordered pairs, or the slope and a point, or the slope and the y-intercept, or many other combinations of appropriate data.

We are given a line

$y - 12 = 2x -8$

And are required to find a line perpendicular to that line. Let's find the slope of the given line. Solving for y

$y = 2x +4$

The coefficient of the x is the slope

$m=2$

The slope of the perpendicular line is the negative reciprocal of m, thus

$\displaystyle m'=-\frac{1}{2}$

We know the second line passes through (2,3). That is enough information to find the second equation:

$y-y_o=m'(x-x_o)$

$\displaystyle y-3=-\frac{1}{2}(x-2)$

Operating

$\displaystyle y=-\frac{1}{2}(x-2)+3$

Simplifying

$\displaystyle y=-\frac{1}{2}x+4$

That is the equation in slope-intercept form. Intercept: y=4

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2 years ago