aman445
contestada

Find the equation of the line that contains the point (-3,-8) and is parallel to the line 6x + 7y = 13. Write the equation in slope-intercer Select the correct choice below and fill in the answer box to complete your choice. (Use integers or fractions for any numbers in the equation.) l​

Respuesta :

Answer:

[tex]y=-\frac{6}{7} x-\frac{74}{7}[/tex]

Step-by-step explanation:

First we put our equation into slope intercept form by subtracting 6x from both sides and then dividing by 7.

6x + 7y = 13 --> [tex]y=-\frac{6}{7}+\frac{13}{7}[/tex]

The line is parallel which means they both have the same slope.

[tex]y=-\frac{6}{7} +b[/tex]

Now we need to find b. this is where the given point comes in. We can find b by substituting -3 for x and -8 for y.  

[tex]-8=-\frac{6}{7} (-3)+b[/tex]

Then we multiply and give the numbers a common denominator so it is easier to manipulate. Remember that a negative times a negative is a positive.

[tex]-\frac{56}{7} =\frac{18}{7} +b[/tex]

Now we subtract [tex]\frac{18}{7}[/tex] from both sides so that the equation equals b

[tex]\frac{-74}{7}=b[/tex]

Finally we but b back into the equation [tex]y=-\frac{6}{7} +b[/tex]

[tex]y=-\frac{6}{7} x-\frac{74}{7}[/tex]