Part 1
Let:
y be the total cost
x be the number of tickets
a be fair admission
Since the fair charges $1.25 per ticket, the equation of the line would look like:
y = 1.25x + a
Since Johnny spent $43.75 and bought 25 tickets, we find a by replacing y with 43.75 and x with 25:
43.75 = 1.25×25 + a
Now solve for a
43.75 = 31.25 + a
43.75 - 31.25 = a
a = 12.50
Going back to the first equation:
y = 1.25x + 12.50
Part 2:
a) Let (9,8) be (x1,y1) and (4,-12) be (x2,y2)
The formula for slope is:

b) For the point-slope equation, I'll use (9,8)
Using the formula:

c) For the slope-intercept form, we solve for y in the point-slope formula:
Answer:
B (1,5)
Step-by-step explanation:
Answer:

factorise out a and x :

but from general factorization:

a » x
b » 2
therefore:

Answer:
since 4y=12 and 4y=2x then 4y=12=2x or 12=2x
Answer:
A is the correct answer
Step-by-step explanation:
(9 -4)/ 5
5/5
=1