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Eva8 [605]
3 years ago
5

How can graphing methods be used to solve a system of linear equations? •How can multiple representations of a system be graphed

?
Mathematics
1 answer:
alina1380 [7]3 years ago
6 0
You can graph multiple equations in one plot by merely superimposing them. You plot the x values against the corresponding y values. Usually, you are given an equation in this form y=f(x), where f(x) is a polynomial containing a variable of x. You assign arbitrary values of x, to get the y values and plot them together as one data point.

The point at which the graphs intersect each other is the solution of the problem.
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Please help! All in the image:
charle [14.2K]

Answer:

66 cm^2

Step-by-step explanation:

By equating the area we get x = 6.

8 0
2 years ago
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ALGEBRAIC PROOF!!!! PLS HELP!!! The area of a rectangular blanket is 20 square feet. The blanket's length is (2x + 1) ft and the
Fynjy0 [20]

Answer:

Length: 5 ft; width: 4 ft.

Step-by-step explanation:

A = LW     formula for area of rectangle

(2x + 1)(2x) = 20      substitute length, width, and area into formula

4x² + 2x - 20 = 0      use the distributive property to multiply out left side

2x² + x - 10 = 0         divide both sides of equation by 2

(2x + 5)(x - 2) = 0        factor out trinomial

2x + 5 = 0  or  x - 2 = 0        use zero product rule to solve for x

2x = -5  or x = 2       subtract 5 from both sides; add 2 to both sides

x = -5/2  or  x = 2

We discard x = -5/2 since it would give negative length and width, and the length and width cannot be negative.

Length: 2x + 1 = 2(2) + 1 = 5

Width: 2x = 2(2) = 4

Length: 5 ft; width: 4 ft.

7 0
2 years ago
Help plz and thank you.I don't know what am I suppose to do on this problems?!
lesya [120]
D= domain = farthest left and right
Domain = (3, infinite)
R = range = bottom to top
Range = (2,2)
3 0
3 years ago
Hep please will give brainiest and other!!!
Vaselesa [24]

y = -9

Ok so to write the equation of the line you will need the slope and y-intercept. Since we are given two-point we can easily find the slope by using this equation for slope formula:

\frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

So now that we have our equation we can just plug in the numbers:

\frac{(-9)-(-9)}{5-(-3)}

After subtracting you should get:

0/8

Since zero is in the numerator and you can't divide zero by anything, the slope is 0. We still need the y-intercept for the equation however since the slope is 0 there is no need to put anything else.

Then to find the y-intercept all you have to do is plug in one of the coordinatines into the slope equation to solve, for example, using the point (5,-9):

(-9) = 5(0) + b

B is the variable for the y-intercept. Also notice how I put 0 as our slope into the equation. Now all you have to do is solve for b. Which you would get b = -9. Since you have your slope and your y-intercept now you just write out your equatoin for the line which is:

y = 0x - 9

**Just write it as

y = -9

5 0
2 years ago
Read 2 more answers
Can you tell what is the answer to this math problem ?
Marrrta [24]
X^2-18 = 3x

x^2 - 3x - 18 = 0

(x-6)(x+3) = 0

x = {-3,6}

So -3 is the answer
3 0
2 years ago
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