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Zolol [24]
1 year ago
8

Can someone help in graphing this equations?

Mathematics
1 answer:
Mars2501 [29]1 year ago
5 0

Answer:

you can just plot the graph with the points that you get

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You Try: Solve for x and y by using elimination. 4x + y = 7 4x - 2y = -2​
salantis [7]

Answer:

\boxed {\boxed {\sf (1, 3) \ or \ x=1 \ and \  y=3}}}

Step-by-step explanation:

We are given this system of equations:

4x+y=7\\4x-2y=-2

We use elimination to solve to eliminate one of the variables, so we only have to work with one at a time. We do this by adding and subtracting the equations, and sometimes multiplying the entire equation by a number.

Notice how both equations have a 4x. This means they can easily be eliminated, without multiplying the equations by another number first. Let's subtract the 2 equations.

\ \ \ 4x+y=7\\ -(4x-2y)=-2

The 4x will cancel because 4x-4x=0.

\ \ \ \ y=7 \\ - (-2y) = -2

Since there are back to back negative signs, they become addition signs.

\ \ \ \ y=7 \\+2y=2

3y=9

We are solving for y , so we must isolate the variable. It is being multiplied by 3 and the inverse of multiplication is division. Divide both sides by 3.

3y/3=9/3\\y=3

Now we can substitute 3 in for y in the original equations. Let's use the first one.

4x+y=7\\4x+3=7

3 is being added to 4x. The inverse of addition is subtraction. Subtract 3 from both sides.

4x+3-3=7-3\\4x=4\\

x is being multiplied by 4. The inverse of multiplication is division. Divide both sides by 4.

4x/4=4/4\\x=1

x is equal to 1 and y is equal to 3. Coordinate points are written as (x, y). The solution to this system of equations is (1, 3).

5 0
2 years ago
5y= 3x -4 solve for y
Shkiper50 [21]

Answer:

y = \frac{3x - 4}{5}

Step-by-step explanation:

5y = 3x - 4

divide both sides by 5 to isolate the y:

y = \frac{3x - 4}{5}

4 0
3 years ago
Read 2 more answers
A 10 ounce container of milk contains 200 calories How many calories does each ounce of milk contain
stiv31 [10]
20 calories per ounce

5 0
3 years ago
Broooooooooo help me
Olenka [21]

Answer:

h(x) = 20x - 15 \\ h(5) = 20 \times 5 - 15 \\  = 100 - 15 \\  = 85 \\ hank \: you

4 0
2 years ago
Read 2 more answers
What is 3x +99 2(8*3)= 135<br> what is x equal to?
Ivenika [448]

Answer: -4

Step-by-step explanation: I am guessing you meant ...99  + 2(8*3)...

3x + 99 + 2(8 x 3) = 135

3x + 99 + 2(24) = 135

3x + 99 +48 = 135

3x + 147 = 135

(3x + 147) - 147 = (135) - 147

3x = -12

(3x) ÷ 3 = (-12) ÷ 3

x = -4

3 0
3 years ago
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