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2 years ago

7

Combine like terms to simplify the expression: -7x + 3y - 2 + 6x - 1 - y2

2 answers:

diamong [38]2 years ago

5 0

It seems that the expression is - 7x + 3y - 2 + 6x -1 - y^2

like terms:

-7x + 6x = - x

3y stands alone

-2 - 1 = -3

- y^2 stands alone

Answer: - x + 3y - 3 - y^2

[note: if the last term is not y^2 but 2y, then you have to combine +3y - 2y = y and the answer would be - x + y - 3]

grigory [225]2 years ago

3 0

-x+y-3
this is the final answer

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Neporo4naja [7]

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netineya [11]

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2 years ago

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Reika [66]

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2 years ago

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Can anyone help me solve 23, 24?

zimovet [89]

Answer:

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Step-by-step explanation:

step 1

Find the slope of the given line

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have

$A(0,2)\ B(3,1)$

Substitute the values

$m=\frac{1-2}{3-0}$

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step 2

Problem 23

we know that

If two lines are perpendicular then the product of its slopes is equal to minus 1

so

$m1*m2=-1$

Find the slope of the line

we have

$m1=-\frac{1}{3}$

substitute in the equation and solve for m2

$(-\frac{1}{3})*m2=-1$

$m2=3$

with the slope m2 and the point $(0,6)$ find the equation of the line

Remember that

The equation of the line in slope intercept form is equal to

$y=mx+b$

we have

$m=3$

$b=6$ -----> the given point is the y-intercept

substitute

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step 3

Problem 24

we know that

If two lines are parallel, then its slopes are the same

so

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The equation of the line in slope intercept form is equal to

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we have

$m=-\frac{1}{3}$

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substitute

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Murljashka [212]

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