Question

For each equation
C=15+2.50n ii. C=50+1.75n iii. C=30+1.50n
Give the coordinates of a point on the graph of the equation.

Answer 1

Please help

Answer 2

just set n=0, so you get: i: C=15, P(0,15), ii: C=50, P(0,50), iii: C=30, P(0,30)

Answer 3

in the order of (n,C)
i)(0,15)
ii)(0,50)
iii)(0,30)

Answer 4

Thanks :)