Question

Martin’s class is organizing a concert to raise money for a charity the graph below shows the relationship between the number of tickets sold,n,the money collected,m.

Answer 1

Answer:

$m=20n$

Step-by-step explanation:

Let

$A(5,100),B(10,200)$

step 1

Find the slope

The formula to calculate the slope between two points is equal to

$slope=\frac{m2-m1}{n2-n1}$

substitute the values

$slope=\frac{200-100}{10-5}=20$

step 2

Find the equation of the line into slope-point

$m-m1=slope(n-n1)$

with the slope and the point A

$m-100=20(n-5)$

$m=20n-100+100$

$m=20n$