Select the correct answer. Find the slope and the y-intercept of the equation 4x + 5y = -9.

Mathematics

1 answer:

Snowcat [4.5K]2 years ago

6 0

Answer:

The answer to your question is letter C

Step-by-step explanation:

To find the slope and the y-intercept solve the equation of the line for y.

4x + 5y = -9

- Substract -4x in both sides

4x - 4x + 5y = -4x - 9

- Simplify

5y = -4x - 9

- Divide by 5 both sides

5y/5 = -4/5x - 9/5

- Simplify

y = -4/5x - 9/5

- Find the slope

m = -4/5

- Find the y-intercept

b = -9/5

You might be interested in

Vitek1552 [10]

Answer:

Given :

→x-y=12

→xy= 3²

Equation formed:

${(x - y)}^{2} = {x}^{2} + {y}^{2} - 2xy$

Step by step explanation:

${(12)}^{2} = {x}^{2} + {y}^{2} - 2 \times 9 \\ 144 + 18 = {x}^{2} + {y}^{2} \\ = 162$

hope it helped you:)

8 0

3 years ago

Dale currently has $599 in his savings account. Prior to getting paid, he had $230 in his savings account. How much was Dale’s p

nlexa [21]

Hi!

So really focus on the fact that he started at $230, and then added an amount of money which we'll call x, which made his total equal $599.

Take the parts I put in bold, and write the equation.
$230 + x = $599

Now we need to find x.

Whatever we do to the equation, we do it to both sides.
Our goal is to isolate x on one side.

Subtract 230 from both sides.
$230 - $230 + x = $599 - $230
x = $369

The answer is A. $230 + x = $599 x = $369

Hope this helps! :)
-Peredhel

8 0

3 years ago

Show that y=cos(t)y=cos(t) is a solution to (dydt)2=1−y2(dydt)2=1−y2. Enter your answers below in terms of the independent varia

GrogVix [38]

Answer:

$(\frac{dy}{dt})^2=sin^2t$