First find the equation of y.

Find the slope m.
.
Pick one point, I'll pick (-3, 9). Insert coordinates in equation then compute n.
.
The equation of a line y is:
.
The perpendicular line
is same like the normal line except its slope m becomes:
.
The equation of a perpendicular bisector is thus:
.
Hope this helps.
Answer:
50
Step-by-step explanation:
.25 goes into 100 4 times, 50 goes into 200 4 times :)
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-4 + 20- 100 + 500 - 2500 + 12,500 - 62,500 + 312,500 = 260,416
Answer:
100
Step-by-step explanation:
120 + 130 + 10 = 260
360 - 260 = 100