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Laabri

Algebra I Chapter 4 Test: Writing Equations of Lines

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Last updated about 2 years ago
8 Nsɛmmisa
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8.
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1.

Write an equation of the line that passes through the point (7,4) and has a slope of 4.

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2.

Write an equation in slope-intercept form that passes through the points below.

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3.

Find the slope and equation of each line described below.

A. Find the slope and the equation of the line that passes through points (-2,3) and (-2, 10).

Slope:

Equation of line:

B. Find the slope and the equation of the line that passes through points (-9,4) and (1,4).

Slope:

Equation:

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4.

Write an equation of the line that is shown in the graph above.

Equation:

Meaning of the slope in context of the problem:

Meaning of y-intercept in context of the problem:

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5.

Write an equation of the line described.

Passes through (2,-1)

parallel to the line y = -7x - 8

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6.

Write an equation of the line described.

Passes through (8,-7)

parallel to the line y = 8x - 7

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7.
  • Negative Correlation

  • Positive Correlation

  • No Correlation

Use may use Desmos Calculator to complete this problem.

The table shows the numbers x of hours spent studying and the test scores y of several students.

a. Use technology to find an equation of the line of best fit.

b. Interpret the slope and y-intercept of the line of best fit.

c. Approximate the test score of a student who spends 5 hours studying.