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The given equation is an equation of a circle where the number after the equal sing is the radius squared.
To find the radius take the square root.
Radius = SQRT(169)
Radius = 13 units.
D is false.
-1 = -(-1)
When you negate the negative on the left, you get a positive 1, not a negative 1.
The answer is, C
2x +3y=7.20
4x+2y=8.80
-13x + 3 is decreasing and has a negative slope.
