Which of the following represents a straight-line graph?

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Which of the following represents a straight-line graph?
a. none of the following is a straight-line graph
b. all of the following are straight-line graphs
c.
varX varY
1 6
2 4
3 2
d.
varW varZ
3 8
4 7
5 4

e.
varT varU
10 0.5
11 1.5
12 2

What is the equation of the line on which (4, -1) and (-4, 5) lie?
a. none of the following
b. y = -.75x + 2
c. y = .75x + 2
d. y = .75x - 2
e. y = -.75x - 2

A line that is perpendicular to this equation would have what slope? (y = -2/3 x + 8)
a. impossible to tell from info given
b. none of the following
c. -3/2
d. 2/3
e. 3/2

Which of the following pairs of equations show two lines that are parallel to each other?
f. none of the following
g. all of the following
h. y = -0.5x - 3 and y = 0.5x - 3
i. y = -0.5x - 3 and y = 0.5x + 3
j. y = -0.5x - 3 and y = 2x + 3

Which of the following points represents a possible solution to the inequality
y > 5-2x ?
a. none of the following
b. all of the following are possible solutions
c. (0, 6)
d. (1, 2)
e. (0, 0)

What is the intercept?
k. none of the following
l. all of the following
m. the number you multiply times x
n. the number you multiply times y
o. the number you add in after you multiply x times a number

Straight line graphs are identified. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.

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