Which equation represents a line which is perpendicular to y=0

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i

Which equation could represent the relationship shown in the scatter plot? y=−3x−2 y=−3/4x+10 y=−2/3x+1 y=9x−12 scatter plot with x axis labeled variable x and y axis labeled variable y. points go from upper left to lower right.

Write the equation of the circle centered at (10,-2) with radius 2