Find the equation of the line through point (1,−5) and perpendicular to y=1/8x+2. Use a forward slash (i. e. "/") for fractions (e. g. 1/2 for 12).

Step-by-step explanation:

Equation of a line:

The equation of a line has the following format:

In which m is the slope and b is the y-intercept.

Perpendicular lines:

When two lines are perpendicular, the multiplication of their slopes is -1.

Perpendicular to y=1/8x+2

This line has slope

So, for the line we want to find the equation, we have that:

So

Find the equation of the line through point (1,−5)

This means that when . We use this to find b. So:

The equation of the line is:

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to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart