Isn't it already in standard form?
Answer:
Equation will be y = 5x + c
Step-by-step explanation:
For point (5, 1)
1 = 5(5) + c
Or, c = - 24
So, y = 5x - 24
(0,0), (1,1)
Basically, any point that is shaded.
5th term = a1 + 4d = 34
10th term = a1 + 9d = 43
subtracting first equation from the second gives:-
5d = 9 so d = 9/5 or 1.8
first term a1 = 34 - 4(1.8) = 26.8
Sum of first 20 terms = (20/2)[2(26.8) + 19*1.8]
= 10* 87.8
= 878