Which is an equation of the line containing (1, -3) and (7, 15)?

You need to find equation of line containing (1,-3) and (7,15)

First find slope (m) = 15+3)/7-1 = 18/6 = 3

So, eq of line is y +3 = 3( x-1)

y+3 = 3x -3

y-3x +6 = 0

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.

i'm sorry mate, but i am not seeing any figures. i am unable to solve this for you.