The candidates who attempted this question could not solve the (a) part correctly. In part (b), candidates could not draw the lines x= 1, y = 2 and x + y = 5 correctly. Neither could they shade the required regions properly. Candidates were expected to answer question (13) as (a)​

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus

b

step-by-step explanation: