The standard form of this equation is

The slope of two parallel lines i the same, so the slope of the line we're looking for is also

Since the line passes through

, the equation is:

Answer:
A: 10 x 1/2 = 15
Step-by-step explanation:
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The perimeter of a triangle is found by adding all the three sides.
Let's call the third side "x"
So,
6+9+x = 23
15+x = 23
x = 8