Two lines are perpendicular if their slope m and m' satisfy the equation

The slope of the given line is 4, because the line is written in the slope-intercept y=mx+q, where m is the slope.
So, the perpendicular slope is

So, we want a line with slope -1/4 and passing through (-1,3). We can use the formula

for the line passing trough (a,b) with slope m:

Step-by-step explanation:
multiply by 64 and then subtract by 47
A)
distance covered
5*2/3 = 3.333
time taken = 21min
this means it takes
5*<span>6.306 = 31.53 to covers 5 km
b) </span><span>21min/3.33 = 6.306 time taken to ran 1 km</span>
Hopes this helps:
Answer: u = 4
1. Expand.
9u - 6 = 6u + 6
2. Add 6 to both sides.
9u = 6u + 6 + 6
3. Simplify 6u + 6 + 6 to 6u + 12.
9u = 6u + 12
4. Subtract 6u from both sides.
9u - 6u = 12
5. Simplify 9u - 6u to 3u.
3u = 12
6. Divide both sides by 3.
u = 12/3
7. Simplify 12/3 to 4.
u = 4
Divide everything by 1/4
you will get
y+3/8*4/1
y+1 1/2
therefore
1/4(y+1 1/2) is the answer