Mathematics: Which equation is a point slope form equation for line ab ? (a) y−2=−2(x+2)(b) y−6=−2(x+2) (c) y−2=−2(x+6)(d) y−2=2(x+2)

Which equation is a point slope form equation for

janellesteele5918

11.03.2022

The point-slope form:

y-y_1=m(x-x_1)

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points A(-2, 6) and B(2, -2). Substitute:

$m=\dfrac{-2-6}{2-(-2)}=\dfrac{-8}{4}=-2\\\\y-6=-2(x-(-2))\\\\\boxed{y-6=-2(x+2)}\to\boxed{(B)}$

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stepheme1

09.04.2023

4x:3x - ratio of number of blue chips to. red chips

8x:3x - number of blue chips is doubled

8x-3x=15
5x=15
x=3
So, there are 9 red chips

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