a Math QUEstions!!?

Question

1.Solve 2x + y = 5 if x and y are whole numbers.

A. {(0, 5), (1, 3), (2, 1)}
B. {(0,- 5), (1, 4), (2, 1)}
C. {(0, 5), (-1, 3), (2, 1)}
D. {(0, 5), (1, 4), (2, 1)}

2.Which one of the following does not describe the slope of a line?

A. rise / run
B. vertical change / horizontal change
C. y^2 - y^1/ x^2 - x^1, ( x^2 = x^1)
D. x^2 - x^1 / y^2 - y^1, (y^2 = y^1)

Answer 1

1 A
2x + y = 5
y = -2x + 5
if x = 0, y = 5,
if x = 1, y = 3
if x = 2 , y = 1

2 D
slope of line is vertical change in y / horizontal change in x

Answer 2

1. A

Answer 3

1. Answer: a

(0, 5): 2(0) + 5 = 5
(1, 3): 2(1) + 3 = 5
(2, 1): 2(2) + 1 = 5


2. Answer: d

... rise = vertical change = y2 - y1
... run = horizontal change = x2 - x1

...pls note, however, that your notation "y^2" actually translates to y-squared, or y raised to the second power... which is NOT how the formula should go. =)

Answer 4

Number 1 is A.

{(0,5), (1,3), (2,1)}

2(0)+(5)=5
2(1)+(3)=5
2(2)+(1)=5

Number 2 is D.

vertical change always goes over horizontal in this situation.
A. and B. are both that. (rise=vertical)(vertical is self-explanitory)
Y also always goes on top when talking about this, so C. is right.
D. is your only choice left because when finding a line's slope you wouldn't put the x change over the Y change


and yes the dude above me is right lol is should be subscript 1 and 2

Answer 5

1 A
2 D

HTH ☺

Doug

Answer 6

1. A

2. D