All categories

3 years ago

Y = 3x

SAT

1 answer:

Anna71 [15]3 years ago

3 0

Answer:

-12

Explanation:

We are given information to solve for 2 variables x and y. To solve this I substituted 3x for y in the equation 5x - 4y = 21

So substituting gets us 5x - 4(3x) = 21

and we can solve the equation for x

5x - 12x = 21

-7x = 21

x = -3

Now that we have found x, we can find y simply by putting it in the equation y = 3x

y = 3(-3) = -9

Once we have both variables, we can find the answer to x + y

-3 + -9 = -3 - 9 = -12

So the answer to the question

x + y = -12

You might be interested in

Which factors led to the ming dynasty’s decline? choose four answers. Low taxes declining trade rebellion poor leadership increa

N76 [4]

The answers are:

B. Declining trade

C. Rebellion

D. Poor Leadership

F. Food shortages

6 0

2 years ago

There are many factors that selective colleges take into consideration when deciding whether to admit a student list 4 of them

Shkiper50 [21]

job experiance

past education

skills

talents

7 0

3 years ago

How would you describe the relationship between the real zeros and x-intercepts of the function mc033-1. Jpg? when you set the f

finlep [7]

When you set the function equal to zero, the solution is x = 3 and the graph has an x-intercept at x = 3.

<u>Given the following data:</u>

$y=log_4(x-2)$

<h3>What is a logarithm function?</h3>

A logarithm function can be defined as a function that represents the inverse of an exponential function. Mathematically, a logarithm function is written as follows:

$y=log_ax$

The domain of the given logarithm function $y=log_4(x-2)$ is (0, infinity) and its graph wouldn't touch the vertical axis but moves to the right. Also, a real zero on the graph would only occurs at x = 1 because $log_4 1$ is equal to zero (0).

Similarly, the graph of $y=log_4(x-2)$ is equal to $log_4 x$ but it moves 2 units to the right.

In conclusion, the graph has an x-intercept at x = 3 when the function is set to zero (0) and its solution would be x = 3.

Read more on logarithm function here: brainly.com/question/26788007

6 0

3 years ago

Write an equation that gives the proportional relationship of the graph.

Airida [17]

Answer:

Here graph of an equation given.

The co-ordinates in the graph given are (0,0), (9,72), (18,144), (36,288), (45,360).

(0,0) point means, for x =0, y=0

(9,72) point means, for x =9, y=72

(18,144) means, for x =18, y=72

(36,288) means, for x = 36, y=288

(45,360) means, for x = 45, y =360.

We know that, , , , , ,

That means in each point, y value is 8 times the x value.

That means, we can write the equation as which also shows the proportional relationship of the graph.

So we have got the required answer.

The required equation is .

Explanation:

5 0

2 years ago

Ikawlawang araw subukin ang sarili panuto:paghambingin ang mga katangian ng mga ibinigay na halimbawa ng akdang patula.isulat an

timurjin [86]

Explanation:

Sorry I can't answer your question make it clear.

5 0

3 years ago

Read 2 more answers