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slavikrds [6]
3 years ago
10

. A perpendicular from the origin meets a line at (4, -5), find the equation of the (a) perpendicular (b) line​

Mathematics
1 answer:
kirill [66]3 years ago
5 0

Answer:

y = ⅘x - 41/5

Step-by-step explanation:

slope of the line from the origin = -5/4

slope of any perpendicular to the line = ⅘

equation of the line from the origin:

y = -(5/4)x

perpendicular to the line that passes through (4,-5):

y+5 = ⅘(x-4)

y = ⅘x - 41/5

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A $64 item is marked up to $80. Find the percent markup.
swat32

Answer:

The Markup was by 25%

Step-by-step explanation:

The answer is 25% because 25% of 64 is 16

25% * 64 = 16

64 + 16 = 80

So, the price markup was by 25%

Hope this helps! :)

5 0
3 years ago
Read 2 more answers
Write the slope-intercept form of the equation of each line?
Ivenika [448]

Problem 1

It appears the line is going through the points (-1,-4) and (0,5)

Let's find the slope

(x_1,y_1) = (-1,-4) \text{ and } (x_2,y_2)  = (0,5)\\\\m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\m = \frac{5 - (-4)}{0 - (-1)}\\\\m = \frac{5 + 4}{0 + 1}\\\\m = \frac{9}{1}\\\\m = 9\\\\

The slope is 9

The y intercept is b = 5 as this is where the graph crosses the y axis.

We go from y = mx+b to y = 9x+5

<h3>Answer:   y = 9x+5</h3>

=======================================================

Problem 2

This line goes through the points (0,4) and (5,5)

We'll follow the same exact steps as before

First we need the slope

(x_1,y_1) = (0,4) \text{ and } (x_2,y_2)  = (5,5)\\\\m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\m = \frac{5 - 4}{5 - 0}\\\\m = \frac{1}{5}\\\\

The y intercept is the y coordinate of (0,4) so it's b = 4

<h3>Answer:  y = \frac{1}{5}x+4</h3>
4 0
2 years ago
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Answer:

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3 years ago
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Answer:

They are congruent, meaning that they are the same but are reflected

6 0
3 years ago
Answer both. Follow directions. No Branliest. Do your best
jolli1 [7]

Answer:

Rate = 1.125

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Step-by-step explanation:

A. 1/8 = 0.125

1+0.125=1.125

1.125 x Old value = New Value

B.

1.125 x 278,000 = New Value

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8 0
3 years ago
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