Question

What is the slope of a line that is perpendicular to 6x + 3y = –9?
A.
2
B.
1/2
C.
–2
D.

-1/2

Answer 1

divide the entire equation by three and isolate y
y=-2x-3, this is the slope intercept form y=m(x)+b where m=slope and
b=y-intercept
slopes of perpendicular lines are the negative reciprocal of each other
here m = -2, the neg. rec. is -1/m = -1/-2 = 1/2

Answer 2

so its b ?

Answer 3

yes, slope is 1/2