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2 years ago

Which equation is a point-slope form of the equation of this line (-2, 1 ) and (1, 7 )

Mathematics

1 answer:

lana [24]2 years ago

6 0

The point-slope formula:

$y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}$

We have (-2, 1) and (1, 7).

Substitute:

$m=\dfrac{7-1}{1-(-2)}=\dfrac{6}{3}=2$

$y-1=2(x-(-2))\\\\y-1=2(x+2)$

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aleksandrvk [35]

Answer:

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Step-by-step explanation:

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3 years ago

Help me with this question please anybody

ehidna [41]

Answer:

x = 19

Step-by-step explanation:

The work shown is almost complete. It can be finished by multiplying both sides of the equation by the inverse of the coefficient of x.

x-coefficient: -1/3

inverse of x-coefficient = 1/(-1/3) = -3

Then you have ...

$-3\left(-\dfrac{19}{3}\right)=-3\left(-\dfrac{1}{3}x\right)\\\\19=x\qquad\text{simplify}\\\\\boxed{x=19}$

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1 year ago

If the expression y2 – 16y + 64 is factored completely, which is one of its factors?

kari74 [83]

Answer:

b) y - 8 is one of the factor of the given expression

Step-by-step explanation:

Explanation:-

Given expression y² - 16 y + 64

⇒ y² - 8 y - 8 y + 64

⇒ y ( y- 8) - 8 ( y - 8)

⇒ (y-8)(y-8)

Therefore (y -8) is one of the factor

8 0

2 years ago

6x +410x Solve for x

Mariulka [41]

Answer:

What is the sum?

Step-by-step explanation

You cannot solve for X as there is no equation :/

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2 years ago

Is the value of the fraction 7−2y/6 greater than the value of the fraction 3y−7/12 ?

Sveta_85 [38]

Complete Question:

Is the value of the fraction 7−2y/6 greater than the value of the fraction 3y−7/12 ? For what values?(Make sure to use an inequality)

Answer:

y < 3

Step-by-step explanation:

The given two fractions are:

$\frac{7-2y}{6}$ and $\frac{3y-7}{12}$

We have to tell for which range of values is the value of first fraction larger than the second fraction. This can be done by setting up an inequality as shown:

$\frac{7-2y}{6} >\frac{3y-7}{12}$

The range of y which will satisfy this inequality will result in first fraction of larger value as compared to the second fraction.

Multiplying both sides of inequality by 12, we get:

$12 \times \frac{7-2y}{6} > 12 \times \frac{3y-7}{12} \\\\ 2(7-2y)>3y-7\\\\ 14-4y>3y-7\\\\ 14+7>3y+4y\\\\ 21>7y\\\\ 3>y\\\\ y$

This means, for y lesser than 3, the value of first fraction is larger than the second one.

3 0

2 years ago