Ali will use 3.6 m of pipe. You can only buy whole metre lengths of the pipe.
a Work out the ratio of pipe, in the form m: 1,
that Ali will use to the length that will be left
over.
The ratio of length of pipe that Olivia used to the
amount she had left over was 10:1
bExplain carefully whether Olivia or Ali had a
higher proportion of unused pipe.

Step-by-step explanation:

you have the line

clearing for y:

we have an equation of the form

the number that accompanies the x is the slope, and the number alone is the intercept with the y-axis

the slope m is:

i will call the slope of the new line

so for two perpendiculares lines we must have:

and from this we can find the new slope:

the new slope is 2,

so far we have that the new line is:

so now we have to find the intercept with the y axis () of the new line, since it passes trough (6,3) ---> x = 6 when y = 3

substituting these x and y values in :

and finally, the equation of the new line that is perpendicular to the original line is: