3 simple math questions. Thanks for any help! :)

1. Which is an equation in point-slope form for the given point and slope?

Point: (1, –7); Slope: -2/3
A. y + 7 = -2/3(x - 1)
B. y + 7 = 2/3(x + 1)
C. y - 7 = -2/3(x + 1)
D. y - 7 = 2/3(x - 1)

2. What is the point-slope form of the equation of a line that passes through the point (3, 5) and has a slope of 2?
A. y + 3 = 2(x + 5)
B. y - 3 = 2(x - 5)
C. y - 5 = 2(x - 3)
D. y - 5 = -2(x - 3)

3. A yearbook printer charges based on the number of pages printed. Here is a table that shows the cost of some recent yearbooks:

Number of pages: 1st set 50 | 2nd set 100 | 3rd set 150 | 4th set 200
Cost: 1st set 1.25 | 2nd set 1.85 | 3rd set 2.45 | 4th set 3.05

Which equation gives the cost, y, in terms of the number of pages, x?

A.
y = 0.012x + 0.65

B.
y = 0.012x + 49.985

C.
y = 0.012x + 1.25

D.
y = 83.3x + 0.65

1
just a way to say 50 is above 1.25 for example
or 100 is above 1.85.
I'd show you the graph itself, but Brainly forbids links, so i cannot.
So please do not ask from the graph.
Thanks for answering! :)

Answers

The Brainliest Answer!
  • Brainly User
2014-11-18T22:12:16+05:30
Answers in order are :- A, C, A.
3 5 3