Answer:
set two equation of line y=ax+b and y=cx+d
when these two lines are perpendicular to each other, then a*c=(-1)
x-2y=2
=>x-2=2y
=>(1/2)x-1=y
set the answer is y=ax+b
we can know that a/(1/2)=(-1)
=>a=-2
bring a=-2 and(7,-7) in y=ax+b
-7=(-2)*7+b
=>b=7
the answer is y=-2x+7
Answer:
14x-4
Step-by-step explanation:
8x-7+6x+3
8x+6x-7+3
14x-7+3
14x-4
Answer:
6/4
Step-by-step explanation:
All second numbers are divisible by 3 except for this ratio
Answer:
Step-by-step explanation:
<h3>Question 12)</h3>
<u>Slope between the points:</u>
- A(a + b, 4m - n) and B(a - b, m + 2n)
<u>Use slope formula:</u>
- Slope = (m + 2n - 4m + n)/(a - b - a - b) =
- (-3m + 3n)/(-2b) =
- (-3)(m - n)/(-2)b
- 1.5(m - n)/b
<h3>Question 13)</h3>
<u>Slope between the points:</u>
- C(3c - d, s + t) and D(c - 2d, s - t)
<u>Use slope formula:</u>
- Slope = (s - t - s - t)/(c - 2d - 3c + d) =
- (-2t)/(-2c - d) =
- (-2)t/(-1)(2c + d)
- 2t/(2c + d)
2/3 = 8/12
reason:
2/3 * 4/4