Ask question

Ask question

All categories

3 years ago

12

Find the x value do that the line through the points (x,-9) and (0,1) has a slope of -4 PLEASE ANSWER

1 answer:

Wittaler [7]3 years ago

7 0

$\bf (\stackrel{x_1}{x}~,~\stackrel{y_1}{-9})\qquad (\stackrel{x_2}{0}~,~\stackrel{y_2}{1}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{1-(-9)}{0-x}=\stackrel{\stackrel{slope}{\downarrow }}{-4}\implies \cfrac{1+9}{-x}=-4 \\\\\\ \cfrac{10}{-x}=-4\implies 10=4x\implies \cfrac{10}{4}=x\implies \cfrac{5}{2}=x$

You might be interested in

I NEED HELP ASAP

deff fn [24]

For the first question you need to find the formula for the rectangle, after you did that fill it in. and find your answer.

5 0

3 years ago

Which equation does the graph of the systems of equations solve?

Viktor [21]

Answer:

We conclude that option 'C' i.e. 1/3x+1=2x-4 is the correct option.

Step-by-step explanation:

From the given graph, it is clear that the two lines meet at the point (3, 2).

In other words,

at x =3, y = 2

Thus,

The point of intersection between two lines is:

(x, y) = (3, 2)

Here:

x = 3 is the value of the x-coordinate

y = 2 is the value of the y-coordinate

Now, checking the equation i.e. 1/3x+1=2x-4 to determine whether the equation contains the correct value of x-coordinate or not.

$\frac{1}{3}x+1=2x-4$

Subtract 1 from both sides

$\frac{1}{3}x+1-1=2x-4-1$

Simplify

$\frac{1}{3}x=2x-5$

subtract 2x from both sides

$\frac{1}{3}x-2x=2x-5-2x$

Simplify

$-\frac{5}{3}x=-5$

Multiply both sides by 5

$3\left(-\frac{5}{3}x\right)=3\left(-5\right)$

Simplify

$-5x=-15$

Divide both sides by -5

$\frac{-5x}{-5}=\frac{-15}{-5}$

Simplify

$x=3$

Therefore, the value of x = 3

Conclusion:

We conclude that option 'C' i.e. 1/3x+1=2x-4 is the correct option.

4 0

3 years ago

The price of jeans was reduced $6 per week for 7 weeks. By how much did the price of the jeans change over 7 weeks?

Nimfa-mama [501]

Just multiply 6 by 7 since the price is reduced $6 per week.

$6.00 × 7 = $42.00

Your final answer is $42

I hope this helped!!

5 0

3 years ago

your sister can get $30 per day for selling clothes at the market. but she has to $60 at first for renting a stand. you can get

ella [17]

Day Sis you
1 -30 20
2 0 40
3 30 60
4 60 80
5 90 100
6 120 120

So day 6.

8 0

3 years ago

Read 2 more answers

PLEASE HELP ME OVER HERE

Artyom0805 [142]

Answer:

Ummm what am i helping you with? You did not say anything, so i can't help you

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers