All categories

3 years ago

What is y equal to 2x + 4y = -18

Mathematics

2 answers:

LUCKY_DIMON [66]3 years ago

7 0

<h3>Answer: y = (-1/2)x - 9/2</h3>

Slope = -1/2

Y intercept = -9/2

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

Work Shown:

2x + 4y = -18

2(x+2y) = -18 .... factor out 2

x+2y = -18/2 .... divide both sides by 2

x+2y = -9

2y = -9-x .... subtract x from both sides

2y = -x-9

y = (-x-9)/2 ... divide both sides by 2

y = (-x/2) - (9/2) ... break up the fraction

y = (-1/2)x - 9/2

The last equation is in slope intercept form y = mx+b with m = -1/2 as the slope and b = -9/2 as the y intercept.

Leni [432]3 years ago

6 0

Answer:

Step-by-step explanation:

2x + 4y = -18

2(x+2y) = -18 .... factor out 2

x+2y = -18/2 .... divide both sides by 2

x+2y = -9

2y = -9-x .... subtract x from both sides

2y = -x-9

y = (-x-9)/2 ... divide both sides by 2

y = (-x/2) - (9/2) ... break up the fraction

y = (-1/2)x - 9/2

The last equation is in slope intercept form y = mx+b with m = -1/2 as the slope and b = -9/2 as the y intercept.

You might be interested in

Simplify the expression below. 2^3 x 2^2

Zigmanuir [339]

Answer:

$32$ $or~2^5$

Step-by-step explanation:

→ $(2^3)(2^2)$

$=2^3*2^2$

$=(2*2*2)*(2*2)$

$=2*2*2*2*2$

$=32$

<u><em>You can also put this in another way:</em></u>

<em /> $2^5=2^3*2^2=2^3^+^2=2^5$ <em />

7 0

4 years ago

Read 2 more answers

Trigonometric identities: Performance task

MakcuM [25]

$\\ \sf\longmapsto (1+cosx)(1-cosx)$

$\\ \sf\longmapsto 1-cos^2x$

$\\ \sf\longmapsto sin^2x$

$\\ \sf\longmapsto \dfrac{1}{cot^2x}-\dfrac{1}{cos^2x}$

$\\ \sf\longmapsto tan^2x-sec^2x$

$\\ \sf\longmapsto 1$

3 0

3 years ago

Read 2 more answers

In the year 2003 a company made 8.8 million in profits. For each consecutive year after that their profits increased by 6%. How

yaroslaw [1]

Answer:

The company's profit in 2007 was 11.088 millions

Step-by-step explanation:

This is a compound interest problem where the initial amount is 8.8 million, the interest rate is 6% and the time period is 4 years and it gets compounded yearly. So we can use the compound interest formula, that is given by:

A = P*(1 + r/n)^(n*t)

Where A is the final amount, P is the initial amount, r is the rate, t is the total amount of time and n is the number of times it gets compounded in one year. We can now use all the values that were given to us to find out the profit of the company.

A = 8.8*(1 + (0.06))^(4) = 8.8*(1.06)^16

A = 8.8*1.26 = 11.088 millions

So the company's profit in 2007 was 11.088 millions

6 0

4 years ago

1.) Which function in vertex form is equivalent to f(x) = x2 + x +1?

Gwar [14]

Hello,

Answer C

x²+x+1=(x²+2*1/2*x+1/4)+1-1/4=(x+1/2)²+3/4

5 0

3 years ago

Factor completely. 10xy + 3y + 20ax +6a

julsineya [31]

Answer:

(y+2a)(10x+3) that it

6 0

3 years ago