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Shalnov [3]
2 years ago
8

Which is the equation of a line with a slope of -2 and passes through the point of (3,-4)

Mathematics
1 answer:
lisabon 2012 [21]2 years ago
5 0

Answer:

2x + y = 2

Step-by-step explanation:

y = -2x + b

-4 = -2(3) + b

-4 = -6 + b

2 = b

y = -2x + 2

2x + y = 2

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The value of y varies directly with x. If x = 4, then y = 268. What is the value of x when y
artcher [175]

Answer:

14

Step-by-step explanation:

268/4=67

So, x=67y.

938/67=14

3 0
3 years ago
Haley's car gets at least 18 miles per gallon. If she plans a trip that is 200 miles, what is the minimum number of gallons she'
Dmitriy789 [7]
200 divided by 18 = 11.1
This means that the minimum number of gallons that she will need is 11.1.

6 0
3 years ago
Read 2 more answers
Help please!<br><br> Find the length of AB:
elena-14-01-66 [18.8K]

Answer:

Probably 16 (whatever unit)

Step-by-step explanation:

You divide both sides by three to get x after rewriting the problem.

8 0
2 years ago
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Help plzz i will give you brianliest Which best describes the graph of the function f(x) = 3(1.8)^x A) The graph passes through
DanielleElmas [232]

Answer:

Step-by-step explanation:

Start with why C isn't the answer.

y = 1.8^0 . The power is zero. Anything to the zero power (anything except 0 to the 0 power) is 1. So 1.8^0 is 1 not something else. C assumes that somehow 0,1.8 turns into 1.8. It does not. The second part is also wrong but you don't need it. However here it is.

x = 0        y = 3

x = 1         y = 3 * 1.8 = 5.4

x = 2        y = 3 * 1.8^2 = 3*3.24 = 9.72

You should be able to see that if you multiply 5.4 by 3, you don't get 9.72

C just does not work.

=======

The actual answer is A. That's exactly what the graph does. If you multiply 5.4 * 1.8 you should get 9.72. Just for completeness, I've included the graph.

6 0
3 years ago
If (9x − 4)(9x + 4) = ax² − b, what is the value of a? (5 points)
lions [1.4K]

Given, (9x - 4)(9x + 4) = ax² - b

From algebraic identities:

We know, (a + b)(a - b) = a² - b²

Now, 81x² + 36x - 36x - 16 = ax² - b

81x² - 16 = axis² - b

So ax² = 81x²

a = 81

-b = -16

b = 16

Solution

Therefore, the value of a is 81.

<h2>MyHeritage</h2>
8 0
2 years ago
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