What is the result of subtracting in the second equation from the first?
-7x-y=0
7x+8y=-6

Step-by-step explanation:

we have

---> First equation

--->Second equation

we know that

To subtract the 2nd equation from the first, negate all three of the second equation terms:  -7x-8y=6

and then adds this result with the first equation

so

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.