3 years ago

Is ( -1 , 2 ) the solution to the system involving y=-1x+1and y=3x+5?

Mathematics

1 answer:

Margaret [11]3 years ago

5 0

Answer:

yes

Step-by-step explanation:

plug it in 1(-1)+1 and 3(-1)+5

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Choose the pair of numbers that is not a solution to the given equation.

balandron [24]

Answer:

The pair (0,3) is not a solution to the equation

Step-by-step explanation:

This can be proved by simply replacing the x and y variables in the equation by the x and y values of the pair, and checking if the equation renders a true statement:

By replacing x and y with their values in the pair (0,3), that is x=0 and y=3, in the equation y = 5 - 2x we get:

3 = 5 - 2 (0)

3 = 5 - 0

3 = 5

which is NOT a true statement.

On the other hand, the other two pairs (2,1) and (1,3) render true statements:

1 = 5 - 2 (2)

1 = 5 - 4

1 = 1

and

3 = 5 - 2 (1)

3 = 5 - 2

3 = 3

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4 years ago

Is the question asking to see if x = 1, y=-2, and z=2 by solving the three equations?

dybincka [34]

Answer:

2 × 1 +2 +2×2 =8

2+2+4=8

8=8

3×1 +3× -2 + 4×2 =5

3-6+8=5

5=5

1+2 × -2 +2 = -5

1-4+2= -5

-5 = -5

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3 years ago

Using the piling method, which of the following can be constructed from

vova2212 [387]

D i think ………………………..

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3 years ago

I need help with this question

densk [106]

Answer:

So we have an original figure with a value of 50 and then a scaled version or dilation

Hence we have a scale factor of

$\frac{1}{5}$

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3 years ago

Write an equation of the line passing through point P(4, -6) that is perpindicular to the line y= -3.

FinnZ [79.3K]

Answer: y=1/3x - 22/3

Step-by-step explanation:

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3 years ago