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jolli1 [7]
3 years ago
12

Graph the equations to solve the system y= x+4 y= -x-6

Mathematics
1 answer:
AVprozaik [17]3 years ago
3 0

You can plot lines by extrapolating two points and connecting them. To extrapolate points on the graph, choose whatever value for x you like, and calculate the correspondent y value.

Line y = x+4:

\text{choose } x=0 \implies y = 0+4 =4 \implies (0,4) \text{ is on the line}

\text{choose } x=1 \implies y = 1+4 =5 \implies (1,5) \text{ is on the line}

Line y = -x-6:

\text{choose } x=-3 \implies y = -(-3)-6 =-3 \implies (-3,-3) \text{ is on the line}

\text{choose } x=-6 \implies y = -(-6)-6 =0 \implies (-6,0) \text{ is on the line}

Now draw the first two points (0,4) and (1,5) and connect them. You have the first line. Draw the last two points (-3,-3) and (-6,0) and connect them. You have the second line.

You should find out that the two lines cross at (-5,-1)

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Which is greater 81.9,81.90,81.900 or 81.91?
IgorLugansk [536]
As long as there are no numbers after them the zeros on the right of the decimal don't matter (i.e. 6.3000000=6.3    3.00000=3)
So 81.9=81.90=81.900
Since three of them are the same number there is only one answer left (81.91)
5 0
3 years ago
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HELPPPPP !!!!!!! Please answer correctly Will mark Brianliest !!!!!!!!!!
azamat
Sorry if I couldn’t help
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What is the slope intercept from for 16x+9y=40
Doss [256]

Answer:

y =  (- \frac{16}{9})x +  \frac{40}{9}is the slope intercept form for 16x+9y=40

Step-by-step explanation:

Here, the given equation is 16 x +  9 y = 40

Now, the slope intercept form of an equation is y = mx + c,

here m = slope of the equation,  b  =  y - intercept

So, now 16x +  9y = 40 on simplification gives

9y  = 40 - 16x

or y = \frac{40 - 16x}{9}  = \frac{40}{9}   - \frac{16x}{9}

or, y =  (- \frac{16}{9})x +  \frac{40}{9}is the slope intercept form of the given equation.

Here, m = (-16/9) and y- intercept = 40/9

7 0
3 years ago
The height of a house is 39.2 ft, a doll house replica is 2.8 ft. What is the scale<br> factor?
Tatiana [17]
I might be wrong cause I don’t removed this from 4 years ago but it should be 36.4 also plz mark brainlyiest
3 0
2 years ago
Which of the following inequalities is graphed on the coordinate plane
azamat

Answer:

The answer is D.

Step-by-step explanation:

Well, all the equations are the same except for the symbol so you don't need to figure out the equation of the line.

Anyways, note that the line is dotted, which means it cannot be A nor B since they have an "equal to."

Also, note that the shaded region is above the graph. Since it is above, it means that y is greater than whatever x is.

Thus, the answer is D.

5 0
3 years ago
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