Let the unknown number be
.
Then the opposite of this unknown number will be
.
It is given to us in the question that when this unknown number,
is increased by 9, or in other words when 9 is added to this unknown number,
, then this becomes 5 times it's opposite, which is
.
Thus, from the given condition in the question, the equation we get is as:

We will solve this by isolating
as:



Thus the required number is -1.5
Answer:
Slope-intercept
y = 3/4(x) - 7
Point slope
y -5= 3/4(x - 16)
Step-by-step explanation:
In slope-intercept
We have the general slope intercept as;
y = mx + b
where m is the slope and b is the y-intercept
in this case, m = 3/4 and b = -7
So we have;
y = 3/4(x) - 7
In point-slope
we have the general form as;
y-y1 = m(x-x1)
So what we have is as follows;
y -5= 3/4(x - 16)
Where we have (x1,y1) = (16,5)
16cm x 60 would give you the centimeters per hour
16 x 60 = 960cm
= 9.6m
(There are 60 minutes in an hour which is how i got that number)