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4 years ago

Use substitution to solve the system of equations

Mathematics

2 answers:

enot [183]4 years ago

8 0

Answer:

the answer is (3.75,5.5)

Step-by-step explanation:

snow_tiger [21]4 years ago

3 0

You plug in x+1.75 into the second equation to get 4x-2(x+1.75)=4. Once you simplify and solve that problem for x you should get x = 3.75. Plug the x-value that you got back into one of the equations (y=x+1.75) or (4x-2y=4). Either way your y-value should be 5.5.
Your answer would be A. because (x,y) or (3.75,5.5) in this case

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How many solutions a system of linear equations have if: Questions. 1.the equations have different slopes? 2.the equations have

KATRIN_1 [288]

Answer:

see below

Step-by-step explanation:

1.the equations have different slopes? They will intersect at one point so one solution

2.the equations have the same slope and different y-intercepts. They are parallel lines with a different y intercept so they will never intersect - no solutions

3.the equations have the same slope and same y-intercepts. they are the same line so they have infinite solutions

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3 years ago

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rusak2 [61]

Answer:

Step-by-step explanation:

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3 years ago

Why does the equation y=3x+5 Not represent a proportional relationship?

Afina-wow [57]

Answer:

see the explanation

Step-by-step explanation:

we now that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line <u><em>and the line passes through the origin</em></u>

In this problem we have

$y=3x+5$

This is the equation of the line in slope intercept form

where

$m=3\\b=5$

The given equation not represent a proportional relationship, because the line not pass through the origin

In a proportional relationship the value of b (y-intercept) is equal to zero

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4 years ago

A sequence has its first term equal to 3, and each term of the sequence is obtained by adding 5 to the previous term. If f(n) re

xxTIMURxx [149]

F(1) = 3
f(2) = 3 + 5 = 8
f(3) = 8 + 5 = 13

f(n) = 5(n - 1) + 3

f(n) = 5n - 2

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3 years ago

What is the domain and range of y = -2x + 1?

salantis [7]

Answer:

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Range: -infinity,f(x)<infinity

Step-by-step explanation:

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3 years ago