Answer:
E: L is perpendicular to a line with slope 
.
Lines are perpendicular if the negative reciprocal of the slope is equal. For example, the reciprocal of 
is 
(remember, to get the reciprocal, simply switch the numerator and the denominator).
So, the negative reciprocal of is . This represents the slope of a line that is perpendicular.
Answer:
b = 5/2x + 7
Step-by-step explanation:
b + (-5/2x) = 7
b - 5/2x = 7
b = 5/2x + 7
Answer:
Step-by-step explanation:
20.70/90= 0.23 per foot
30*.23= 6.90
It'll cost $6.90 for 30 more feet.
Answer:
w = 2
Step-by-step explanation:
3(3w + 2) + 5(w + 4) = 54
(9w + 6) + (5w + 20) = 54
(9w + 6) + 5w = 34
9w + 5w = 28
14w = 28
w = 28/14
w = 2
Answer:
y = -x + 9
Step-by-step explanation:
Since the line is parallel, the slope is -1.
y = -x + c
Substituting (0,9) into the above equation:
9 = 0 + c
c = 9
y = -x + 9
<em>Feel free to mark this as brainliest! :D</em>
