Respuesta :

Answer:

r = 13

Step-by-step explanation:

The first step is to find b from y=mx=b using m=4/3 and (-4,8)

[tex]8=\frac{4}{3}(-4)+b[/tex]

After solving the equation, b will equal -16/3 making the final equation be

[tex]y=\frac{4}{3} x-\frac{16}{3}[/tex]

Using the equation, you can solve for r.

[tex]12=\frac{4}{3} x-\frac{16}{3}[/tex]

This will bring the answer being r = 13

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