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3 years ago

8

Which of the following ordered pairs is a solution of the equation y = -4x². Can someone help me solve it. Could you guys also e

xplain why that answer is.
Answers:
(-2,16)
(1, -8)
(0,-4)
(2,-16

1 answer:

RUDIKE [14]3 years ago

4 0

Answer:

graph{3x [-10, 10, -5, 5]}

Explanation:

this function is in the form of

y

=

m

x

+

q

with

m

=

3

,

q

=

0

so it's an straight line: ascending [

m

>

0

], that touch the

y

axis in the point

(

0

,

0

)

[

q

=

0

]

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9 nickels and 11 pennies

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3 years ago

Draw a line through the origin that has a slope of 4/3

Ket [755]

Answer:

The graph in the attached figure

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line <u><em>and the line passes through the origin</em></u>

In this problem the given line represent a proportional relationship, because passes through the origin

we have

$k=\frac{4}{3}$ ---> the constant of proportionality k is equal to the slope

substitute

The linear equation is

$y=\frac{4}{3}x$

To draw a line we need two points

we have (0,0)

To find the other point

assume x=3 and substitute in the equation to solve for y

$y=\frac{4}{3}(3)=4$

so

The other point is (3,4)

using a graphing tool

Plot the points (0,0) and (3,4)

To graph the line join the points

see the attached figure

6 0

3 years ago

a fruit seller had thought to sell 120kg of fruit at 150 dollars / kg but sold it 5% less. find out how much dollars the seller

Nady [450]

900$ loss

X/150=.05/1
x= 142.5

120(142.5)=17100
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18000-17100= 900

3 0

3 years ago

A store manager predicts that 115 hats will be sold if each hat costs $18. The manager predicts that 3 less hats will be sold fo

8_murik_8 [283]

Answer:

The prices at which manager predict that at least 55 hats will be sold would be would be of $38

Step-by-step explanation:

According to the given data we the following:

Number of hats sold at $18=115

The manager predicts at 3 less will sold for every rise in 1 $ for at least 55 hats.

Therefore, reduction in number=115 hats-55 hats=60

So, increase in price=reduction in number/number of hats manager predicts that will be sold for every $1 increase in price

increase in price=60/3=$20

Therefore, prices at which manager predict that at least 55 hats will be sold would be=$18+$20=$38

The prices at which manager predict that at least 55 hats will be sold would be would be of $38

8 0

3 years ago

Which statement is true about the equations -3x + 4y = 12 and 1/4x-1/3y= 1?

Contact [7]

Answer:

the third selection is corret

Step-by-step explanation:

Ax + by + c = 0, k = - a/b.

so The slope of the first line = $\frac{4}{3}$ ,

the slope of the second line = $\frac{4}{3}$ ;

So these two lines are parallel and they don't intersect

4 0

2 years ago