Slope of zero and through the point (6,-18)

y = - 18

The equation of a line with a slope of zero is a horizontal line, parallel to the x- axis. The equation of this line is y = c , where c is the value of the y- coordinate of a point the line passes through.

here the line passes through (6 , - 18) with y-coordinate of - 18

thus equation is y = - 18

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d