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IgorC [24]
3 years ago
12

If a line has a slope of 2 and contains the point (-2, 1), what is its equation in point-slope form?

Mathematics
1 answer:
Alborosie3 years ago
8 0
First plug the point ans slope into the point slope form which is y-y1=m(x-x1)

y-1=2(x-(-2))

Simplify

y-1=2(x+2)
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This is really confusing. Thanks for helping.
Mandarinka [93]
Count change of signs to tell positive roots
then replace x with -x and evaluate, then count change in sign for negative roots


initially
+, -, -, +, +, -
3 changes
3 or 1 positive roots


replacing x with -x
-,-,+,+,-,-
2 changes
2 or 0 negative roots



B is answer
5 0
3 years ago
What is the equation of the line that passes through the point (-4,-2) and has a<br> slope of -1/2?
Soloha48 [4]

Answer:

y =  -  \frac{1}{2} x

8 0
3 years ago
Do you think a polynomial can be a factor of another polynomial?
Vladimir [108]

Answer:

Yes

Step-by-step explanation:

Example

x+2 is a factor of 2x+4.

2(x+2) = 2x+4.

6 0
3 years ago
Let f(x) = 2x^2 + 7x - 5 and g (x) = -8x^2 -3x + 5 what is g(x) + f(x)
babunello [35]
2x^2+7x-5+(-8x^2-3x+5)=-6x^2+4x.
6 0
3 years ago
Solve for x. 3x + 5 = 23​
Lunna [17]

[|] Answer [|]

\boxed{X \ = \ 6}

[|] Explanation [|]

3x + 5 = 23

_________

_________

Subtract 5 From Both Sides:

3x + 5 - 5 = 23 - 5

Simplify:

3x = 18

Divide Both Sides By 3:

\frac{3x}{3} \ = \ \frac{18}{3}

Simplify:

X = 6

_________

_________

- Check Your Work -

Substitute 6 For X:

3 * 6 + 5 = 23

Parenthesis

Exponents

Multiply

Divide

Add

Subtract

3 * 6 = 18

18 + 5 = 23

\boxed{[|] \ Eclipsed \ [|]}

8 0
3 years ago
Read 2 more answers
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