Algebra 1 Benchmark # 4

What is the equation of the line that contains

the points (-3, 7) and (-5, 21)?

y = 7x + 28

y = 7x - 14

y = -7x - 14

y = 7x - 28

What is the equation of the line with a slope

of 2 that passes through the x-axis at -5?

y = -2x - 10

y = 2x - 5

y = -2x - 5

y = 2x + 10

This table represents points that belong to a

given line. What is the equation of the line that

passes through the points on the table?

y = 5x + 5

y = 10x + 5

y = 10x

y = 5x + 25

A lawn service charges $25 per hour plus a

one-time $30 fee for fertilizer. Which equation

represents the total charge (y) for working

(x) hours?

y = 25x + 30

y = 30x + 25

y = 25(x + 30)

y = 25(x + 5)

What is the equation of the graphed function?

y = -½ x + 2

y = ½ x - 2

y = -x + 2

y = x + 2

What is the slope of the line perpendicular

to y = -½x + 4?

-2

-½

The equations represent parallel lines.

The equations represent the same line.

The equations represent perpendicular lines.

The equations represent lines that intersect

but are not perpendicular.

Which statement is true about these equations?

y = -2x - 1

y = -2x + 5

Which equation best represents the line of best

fit for this scatter plot?

y = ½x - 4

y = ½x - 2

y = 2x - 2

y = 2x - 4

5,685

5,663

The table below shows the population of Coal

County, Oklahoma.

2006

2000

2004

2002

2008

Year

6004

5929

5606

5721

5831

Pop.

Paul determined the line of best fit

is y = -44.5x + 5996, where x is the

number of years since 2000 and y is

the population. According to Paul's

model, what is the best prediction

for the population in 2007?

5,773

5,700

Pat's lower grades tend to follow weeks where she studies less.

Getting higher grades will cause Pat to study less the week before the test.

Pat will never study more than 4.5 hours.

Pat's grades are going down.

Pat recorded the scores she received on tests compared with the number

of hours she studied on the week before the tests.

100

Study time (Hours)

What does the scatterplot

imply about the

relationship between

her test score and the time

she studied before the test?

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