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Mashutka [201]
3 years ago
14

Hey! Can you help out a bit?

Mathematics
2 answers:
Lady_Fox [76]3 years ago
5 0
k:y=m_1x+b_1;\ l:y=m_2x+b_2\\\\k\ \perp\ l\iff m_1m_2=-1\\====================================\\k:y=-x-2;\ l:y=mx+b\\\\k\ \perp\ l\iff-1\cdot m=-1\Rightarrow m=1\\\\l:y=1x+b\to y=x+b\\\\(4;\ 1)\to substitute\ x=4\ and\ y=1\ to\ y=x+b:\\\\4+b=1\\b=1-4\\b=-3\\\\Answer:y=x-3
Shtirlitz [24]3 years ago
5 0
Hey !  I'll try.

You haven't said what the question is, and it doesn't show in the picture.

I'll assume that you're asked to find the equation of the line perpendicular to
the given line and passing through the point (4, 1).  Hope that's it.
===========================================
First, you need to remember that perpendicular lines have negative reciprocal slopes.

The given line has slope of -1, so the line perpendicular to it has slope of +1/1 = 1 .

So the equation of the new line is going to be [  y = 1x + intercept  ].

You know that the new line goes through the point where x=4 and y=1.
Stick these into the part of the equation that you already know:

y = 1x + intercept

1 = 1(4) + intercept.

Can you find the intercept from here ?
Maybe I'd better just finish it off.

1 = 4 + intercept.

Subtract 4 from each side:

intercept = -3

So the equation of the line perpendicular to [  y = -x - 2  ]  going through (4, 1) is

<u>y = x - 3</u>

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Which point on the graph shows the price of 6 ounces of cheese? Use the formula y=x÷2 to find y when x is 6.
Gwar [14]

Answer: The required point is A(6, 3) in the attached graph.

Step-by-step explanation:  We are to find the point on the given graph that shows the price of 6 ounces of cheese.

The formula to be used is given by

y=x\div 2\\\\\Rightarrow y=\dfrac{x}{2}~~~~~~~~~~~~~~~~(i).

Given that,

when x = 2 then y = 1. That is, price of 2 ounces of cheese is $1.

when x = 7 then y = 3.5. That is, price of 7 ounces of cheese is $3.5.

when x = 14 then y = 7. That is, price of 14 ounces of cheese is $7.

Therefore, these points satisfy the given relation (i).

Hence, if x = 6, then from equation (i), we have

y=\dfrac{x}{2}=\dfrac{6}{2}=3.

Thus, the price of 6 ounces of cheese is &3. This gives that the required point is A(6, 3) on the graph attached below.

8 0
3 years ago
Read 2 more answers
Plz tell me this solution it's very urgent​
a_sh-v [17]

Step-by-step explanation:

here is fig 15

x=36 (v.o.a are equal)

36+y=180

y=180-36=144

y=z=144 vertically

3 0
3 years ago
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