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pishuonlain [190]
3 years ago
7

Determine whether y varies directly with x. If so, find the constant of variation k.

Mathematics
1 answer:
kumpel [21]3 years ago
5 0
Direct variation is y=kx, inverse variation is y=k/x....

-5y=-2x divide both sides by -5

y=2.5x

So this is a direct variation with a constant of 2.5
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I really need help on this !!
Naddik [55]

Answer:

r = -1

Step-by-step explanation:

(y2-y1)/(x2-x1)=m

(r,7)=(x1,y1) and (3,4)=(x2-y2) and m=-3/5

so plug in...

(4-7)/(4-r)=-3/5

then solve for r which will get that r = -1

numerator: 4-7=-3

denominator: 4-r=5 -> 4-5=0+r -> -1=r

4 0
3 years ago
Jack says 2÷2=2 and Sam says 2÷2=9 and Paul says 2÷2=1,who is corrcet?<br><br>Hello I am new​
yarga [219]

Answer:

Paul is correct 2 divided by 2 equals 1

Step-by-step explanation:

If you divide 2 by 2 you get 1 because 2×2=4 and 2×1=2

8 0
2 years ago
Mrs perry shares out 28 biscuits between Gemma and Zak in the ratio 1:6
dsp73
One of them will be given 4 biscuits and the other will be given 24.
5 0
3 years ago
Please help me
Inga [223]

Answer:

D

Step-by-step explanation:

All real numbers are solution

Step 1: Simplify both sides of the inequality.

8x−7<8x−3

Step 2: Subtract 8x from both sides.

8x−7−8x<8x−3−8x

−7<−3

Step 3: Add 7 to both sides.

−7+7<−3+7

0<4

hope this help:)

5 0
2 years ago
Given the points (3, 2) and (6, 4), which of the following are true about the line passing through these points? The line has a
Ad libitum [116K]

Answer:

The slope is 2/3 and the function is y=2/3x  which is a direct variation function.

Step-by-step explanation:

To find the slope of a line between two points, we use the equation

m = (y2-y1)/ (x2-x1)

where (x1,y1) and (x2,y2) are the two points

m= (4-2)/(6-3)

  = 2/3

The slope of the line is 2/3

The equation of the line is

y-y1 = m(x-x1)

y-2 = 2/3(x-3)

Distribute

y-2 = 2/3x -2

Add 2 to each side

y-2+2 = 2/3x -2+2

y = 2/3x

This is a direct variation function

Let x = -6

y = 2/3(-6)

y = -4

(-6,-4)

3 0
3 years ago
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