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slamgirl [31]
2 years ago
13

Write the inverse of 6x+8y=13 in f^-1(x) notation

Mathematics
1 answer:
Margarita [4]2 years ago
4 0

Answer:

-4x/3+13/6

Step-by-step explanation:

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Please help!
FrozenT [24]
Points are collinear if they lie on the same line.

First find the equation of the line that passes through the points B and C.
B(4, -3) \\
x_1=4 \\ y_1=-3 \\ \\
C(-4,3) \\
x_2=-4 \\ y_2=3 \\ \\
m=\frac{y_2-y_1}{x_2-x_1}=\frac{3-(-3)}{-4-4}=\frac{3+3}{-8}=\frac{6}{-8}=-\frac{3}{4} \\ \\
y=-\frac{3}{4}x+b \\
(-4,3) \\
3=-\frac{3}{4} \times (-4)+b \\
3=3+b \\
b=0 \\ \\
y=-\frac{3}{4}x

The points lie on the line y=(-3/4)x.
Now plug the coordinates of the given points into the equation and check if they satisfy the equation.

(0,0) \\
x=0 \\ y=0 \\ \Downarrow \\
0 \stackrel{?}{=} -\frac{3}{4} \times 0 \\
0 \stackrel{?}{=} 0 \\
0=0 \\
\hbox{the point lies on the line} \\ \\
(1,1) \\
x=1 \\ y=1 \\ \Downarrow \\
1 \stackrel{?}{=} -\frac{3}{4} \times 1 \\
1 \stackrel{?}{=} -\frac{3}{4} \\
1 \not= -\frac{3}{4} \\
\hbox{the point doesn't lie on the line}


(1,-5) \\
x=1 \\ y=-5 \\ \Downarrow \\ -5 \stackrel{?}{=} -\frac{3}{4} \times 1 \\
-5 \stackrel{?}{=} -\frac{3}{4} \\
-5 \not= -\frac{3}{4} \\
\hbox{the point doesn't lie on the line} \\ \\
(6,-8) \\
x=6 \\ y=-8 \\ \Downarrow \\
-8 \stackrel{?}{=} -\frac{3}{4} \times 6 \\
-8 \stackrel{?}{=} -\frac{9}{2} \\
-8 \not= -\frac{9}{2} \\
\hbox{the point doesn't lie on the line}

The answer is A.
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$79.79 with a 12% discount = 70.22
i found that by
<span>79.79 x 12 / 100 </span>
<span>957.48 / 100 </span>
<span>$9.57  then
</span>79.79-9.57=70.22
now you have to add taxs so
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The total cost of the skateboard is $76.01.

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he drew 2 cards

Step-by-step explanation:

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