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jasenka [17]
2 years ago
14

Graph solve for y 5y-x=20

Mathematics
2 answers:
prisoha [69]2 years ago
5 0
Answer: y=1/5x+4 !!!

Rewrite in slope intercept form (y=mx+b) so:

5y=x+20

Divide by 5

5y/5=x/5+20/5

Then solve so you’ll get

Y=1/5x+4
Tomtit [17]2 years ago
3 0

5y-x=20            <em>add x to both sides</em>

5y=x+20          <em>divide both sides by 5</em>

\boxed{y=\dfrac{1}{5}x+4}

It's the equation of a line. We need only two points to the plot the graph.

Choice any two values of x. Put them to the equation of a line and calculate the values of y.

for x = 0:

y=\dfrac{1}{5}(0)+4=0+4=4\to(0,\ 4)

for x = 5:

y=\dfrac{1}{5}(5)+4=1+4=5\to(5,\ 5)

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RSB [31]

The value of y is 3 when x is 6.

Solution:

The given table is the amount of cheese in ounces and the cost price.

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The formula which derived from the table is y = x ÷ 2.

That is $y=\frac{x}{2}.

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y = 3

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3 similar shirts and 4 similar jackets cost $360. 1 such shirt and 3 such jackets cost $220. Find the costof each shirt.
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3s + 4j = 360
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This one we can solve using substitution, in that
s + 3j = 220 implies s = 220 - 3j (subtract 3j from each side).

Now substitute into the first equation:

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660 - 9j + 4j = 360  [Distributive property]
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Subtract 360 from each side, and add 5j to each side.
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Divide each side by 5.
$60 = price of a jacket.

Three of these plus a shirt runs $220.
3(60) = 180
180 + s = 220
180 - 180 + s = 220 - 180 [Subtract 180 from each side]
s =   40

Now we double check.
3(40) + 4 (60) = 120 + 240 = 360.  This satisfies the first equation.
We could check the second one too, but I'm satisfied.
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Answer:

Step-by-step explanation:

The simple interest formula is

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Filling in we have

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