Question

Please help me please

Answer 1

Answer:

C

Step-by-step explanation:

(1) -7x - 8y = 12 ⇔ -8y = 7x + 12 ⇔ y = $\frac{-7x}{8} - \frac{12}{8} = \frac{-7x}{8} - \frac{3}{2}$

The two lines that are perpendicular as   $x_{1} * x_{2} = -1$

So, the slope of the second equation is: $x_{2} = 1/ \frac{-7}{8} = \frac{8}{7}$

Thus, we have:  $y_{2} = \frac{8}{7} x + b$    (2)

Plug P(-3,1) into (2):    1 = $\frac{8}{7} * (-3) + b$    ⇒ b = $\frac{31}{7}$

Therefore, the result will be C. y = $\frac{8}{7}$*x + $\frac{31}{7}$

I hope this will help you.

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