Is y=4x-5 proportional

Answers

Answer 1

Answer:

Answer: A proportional relation between two numbers, x and y is when:

y= k*x, where k is a real number.

this is read as "the number y is k times the number x" so y is proportional to x, and the constant of proportionality is k.

The equation in the problem is: y = 4x - 5, here you have an x-intercept equal to -5, this quantity breaks the proportionality relation. So in this case y is not proportional to x.

Answer 2

Answer: No it's not proportional because it would be like y=4x. And proportional relationship doesn't have any operation between the “k” and “x” where K is the unit rate or the constant of proportionality!

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Jill bought oranges and bananas. she bought 12 pieces of fruit and spent $5. oranges cost $0.50 each and bananas $0.25. write a system of equations to model the problem. then solve the system algebraically. how many oranges and how many bananas did Jill buy? *show work please*

Answers

x=number of oranges.
y=number of bananas.
$5

we can suggest this system of equations:
x+y=12
0.5x+0.25y=5
We can solve this system of equations by substitution method.
x=12-y

0.5(12-y)+0.25y=5
6-0.5y+0.25y=5
-0.25y=5-6
-0.25y=-1
y=-1 /- 0.25=4

x=12-y
x=12-4=8

Answer: Jill bought 8 oranges and 4 bananas.

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Answers

Answer:

A) The cost is the same at 5 months.

Step-by-step explanation:

Lets use m to represent the number of months it will take for the cost to be the same. If we set up an equation, we can write:

75 + 10m = 50 + 15m

-50 on both sides

25 + 10m = 15m

-10m on both sides

25 = 5m

Divide by 5 on both sides.

5 = m

That means it will take 5months for the costs to be the same.

Charlie bought a 2and 1 half bag of oranges for $3.75.What is the cost of one pound of oranges?

Answers

Charlie buys 2.5 pounds of oranges for 3.75.

To find out how much he will pay for 1 pound of oranges, use the proportion

2.5/3.75 = 1/x
Cross multiply to get x = $1.50 per pound of oranges.

Let number be "x"( the cost of one pound of oranges ) ;
( 2 1 / 2 )x = 3.75 ;
( 5 / 2 )x = 375 / 100 ;
x = ( 375 / 100 )×( 2 / 5 ) ;
x = 750 / 100 ;
x = $7.50 ;

What is the answer to this??

Answers

The answer is B 2+3=5 change 5 into 5/1 do 1/5×5/1 which equals 5/5 then change it to 1z -1+1 equals 0, -4z equals -3

What is the unit form of (2 tens 1 one) x 10

Answers

WILLY, it is Two tens and one one multiplied by 10 is:

(20 + 1) * 10 = 21 * 10 = 210

In the expression 4 +3x+5y what is the coefficent of x

Answers

Answer:

your coefficient is 3 because its infront of the x

Answer: 3

Hope this helps:)

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