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sergey [27]
3 years ago
7

Why might someone choose to use the y-intercept and the slope to graph a line?

Mathematics
1 answer:
ss7ja [257]3 years ago
4 0
Because if you know where the line crosses the y axis (the y intercept) you can plot a point there. Then with slope you can count to your next plotted point. With the 2 points you can now draw your line.
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The variable y is directly proportional to the variable x. If y = 32 when x = 20, what is the value of x when y = 40?
elena55 [62]

Answer:

The Correct option is C ) 25

Therefore the value of x is 25 when y =40.

Step-by-step explanation:

Given:

Variable 'y' is directly proportional to the variable 'x'.

\therefore y=kx     ......Direct Variation

Where,

k = Constant of proportionality

To Find:

value of x = ? when y = 40

Solution:

First we need to find Constant of proportionality

When x = 20 and y = 32

Substituting the values we get

32=k\times 20\\k=\dfrac{32}{20}=1.6\\\\k=1.6

Now when k =1.6 , y = 40 then x will be

40=1.6\times x\\\\x=\dfrac{40}{1.6}=25\\\\x=25

Therefore the value of x is 25 when y =40.

6 0
3 years ago
Tami has a new pet crate for her dog. The length of the crate is four feet. The rectangular floor area of the crate is 1023 squa
Anit [1.1K]

Answer:

255.75 feet or 255\frac{3}{4} feet

Step-by-step explanation:

area of a rectangle / length = breadth

1023 / 4 = 255.75 or 255\frac{3}{4} feet

6 0
3 years ago
Helppppppp asappppp
vaieri [72.5K]

Answer:

Your answer is 87.487699

4 0
3 years ago
Y(0.5+2) please help me on this !!!
Alecsey [184]

Answer:

0.5y+2y

Step-by-step explanation:

bc you divide out the y

7 0
3 years ago
Can some one help me ‼ pleasee ‼
marshall27 [118]

Answer:

12

Step-by-step explanation:

The 2 lines are equal in length. Therefore:-

ST = 21 - 9 = 12

7 0
3 years ago
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