1 year ago

Y= 3x + 1

2 answers:

8 0

The answer is D. -11

-3x+1=2x-3 (solve and you will get x= -4)

Substitute x in one of the equations to solve for x

y= 3(-4) + 1

y= -11

Alika [10]1 year ago

3 0

Answer:

y= -11

Step-by-step explanation:

After rearranging equation 2, we get x= y+3/2

Sub it into equation 1

y= 3(y+3/2) + 1

y= 3y+9/2 + 1

y= 3y + 11 / 2

2y = 3y + 11

-y = 11

y = -11

You might be interested in

What is the value of the variable

3241004551 [841]

The value of the variable would be 82, as the inside angles of a triangle add up to 180

5 0

3 years ago

Which relationship is a direct variation?

vekshin1

D because each y value is obtained by multiplying x by -2
y = -2x which is direct variation.

8 0

2 years ago

Read 2 more answers

Consider the surface z = x 2+4y 2+1. Suppose you are walking on this surface directly above a curve C in the xy-plane, where the

Bess [88]

With $x(t)=\cos t$ and $y(t)=\sin t$ , we have

$z(t)=x(t)^2+4y(t)^2+1$

$z(t)=\cos^2t+4\sin^2t+1$

$z(t)=3\sin^2t+2$

Then $z(t)$ has critical points where

$\dfrac{\mathrm dz}{\mathrm dt}=6\sin t\cos t=3\sin2t=0$

$\implies\sin2t=0\implies2t=n\pi\implies t=\dfrac{n\pi}2$

where $n$ is any integer.

$z(t)$ is increasing wherever $\sin2t>0$ , which happens for

$\dfrac{2n\pi}2$

$\boxed{n\pi$

5 0

2 years ago

Are these answers correct

Reika [66]

Answer:

yes

Step-by-step explanation:

3 0

2 years ago

Hey can you please help me posted picture of question

Ad libitum [116K]

The correct answer is option C.

Step by step solution is listed below.

$(4 x^{3}+8x)( x^{2} -1) \\ \\ 
 =4 x^{3}(x^{2} -1)+8x(x^{2} -1) \\ \\ 
=4x^{5}-4 x^{3}+8 x^{3}-8x \\ \\ 
=4 x^{5}+4 x^{3}-8x$

3 0

2 years ago