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34kurt
3 years ago
10

Write the equation of the line passing through point (4, -1) and perpendicular to the line whose equation is 2 x - y - 7 = 0.

Mathematics
1 answer:
Dimas [21]3 years ago
6 0
<span>2 x - y - 7 = 0
y =2x - 7 slope = 2
</span><span>perpendicular slope = -1/2
</span><span>line passing through point (4, -1) 
y = mx + b
-1=-1/2(4) + b
-1  = - 2 + b
b = 1

equation
y =-1/2(x) + 1</span>
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Answer:

We are given that a store announced that their $500 appliances were on sale.

The price of the appliances after discount is $475.

We are required to find the percent discount on the appliances.

To find the percent discount, we have to use the below formula:

\frac{(Actual-discounted)}{Actual} \times 100\%

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0.05 \times 100\%

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3 years ago
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Answer:

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Step-by-step explanation:

The (0, 5) is the point where the parabola passes through the y axis (where x = 0), so we can write the equation as

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Also, since (1, 4) and (2, 5) are points on the curve, substituting, we have the system:

a(1)^2 + 1b + 5 = 4

a(2)^2 + 2b + 5 = 5

Simplify these 2 equations:

a  + b  =  -1  .................(1)

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Multiply the first equation by -2:

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Add (2) + (3):

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Substitute a = 1 into (2):-

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b = -2.

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Step-by-step explanation:

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