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Algebra 1 : Functions and Lines

Study concepts, example questions & explanations for Algebra 1

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10 Diagnostic Tests 557 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #85 : How To Find Slope Of A Line

Find the slope of the line that passes through the following points:

(-19, 12) and (0, 1)

Possible Answers:

$-\frac{12}{19}$

$-\frac{19}{11}$

$-\frac{11}{19}$

Correct answer:

$-\frac{11}{19}$

Explanation:

Use the following formula to find the slope of the line:

$\text{Slope}=\frac{y_2-y_1}{x_2-x_1}$

Remember that points are written in the following format:

(x,y)

For this line,

$\text{Slope}=\frac{1-12}{0-(-19)}$

Subtracting a negative number is the same as adding a positive number.

$\text{Slope}=\frac{1-12}{0+19}$

$\text{Slope}=\frac{-11}{19}$

Simplify.

$\text{Slope}=-\frac{11}{19}$

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Example Question #81 : How To Find Slope Of A Line

Find the slope of the line that passes through the following points:

(-4, 13) and (5, 5)

Possible Answers:

$-\frac{8}{9}$

$-\frac{9}{8}$

$\frac{10}{9}$

Correct answer:

$-\frac{8}{9}$

Explanation:

Use the following formula to find the slope of the line:

$\text{Slope}=\frac{y_2-y_1}{x_2-x_1}$

Remember that points are written in the following format:

(x,y)

For this line,

$\text{Slope}=\frac{5-13}{5-(-4)}$

Subtracting a negative number is the same as adding a positive number.

$\text{Slope}=\frac{5-13}{5+4}$

$\text{Slope}=\frac{-8}{9}$

Simplify.

$\text{Slope}=-\frac{8}{9}$

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Example Question #87 : How To Find Slope Of A Line

Find the slope of the line that passes through the following points:

(11, 12) and (12, 13)

Possible Answers:

$\frac{1}{2}$

Correct answer:

Explanation:

Use the following formula to find the slope of the line:

$\text{Slope}=\frac{y_2-y_1}{x_2-x_1}$

Remember that points are written in the following format:

(x,y)

For this line,

$\text{Slope}=\frac{13-12}{12-11}$

$\text{Slope}=\frac{1}{1}$

Simplify.

$\text{Slope}=1$

Report an Error

Example Question #88 : How To Find Slope Of A Line

Find the slope of the line that passes through the following points:

(-5, 7) and (-5, 12)

Possible Answers:

$\text{Undefined}$

$-\frac{12}{17}$

$\frac{10}{19}$

Correct answer:

$\text{Undefined}$

Explanation:

Use the following formula to find the slope of the line:

$\text{Slope}=\frac{y_2-y_1}{x_2-x_1}$

Remember that points are written in the following format:

(x,y)

For this line,

$\text{Slope}=\frac{12-7}{-5-(-5)}$

Subtracting a negative number is the same as adding a positive number.

$\text{Slope}=\frac{12-7}{-5+5}$

$\text{Slope}=\frac{5}{0}$

Because you cannot divide by zero, the slope of the vertical line is undefined.

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Example Question #89 : How To Find Slope Of A Line

Find the slope of the line that passes through the following points:

(19, 21) and (26, 35)

Possible Answers:

$\frac{1}{2}$

$\frac{7}{3}$

Correct answer:

Explanation:

Use the following formula to find the slope of the line:

$\text{Slope}=\frac{y_2-y_1}{x_2-x_1}$

Remember that points are written in the following format:

(x,y)

For this line,

$\text{Slope}=\frac{35-21}{26-19}$

$\text{Slope}=\frac{14}{7}$

Simplify.

$\text{Slope}=2$

Report an Error

Example Question #81 : How To Find Slope Of A Line

Find the slope of the line that goes through the following points:

(12, 2) and (-11, 2)

Possible Answers:

$\frac{14}{9}$

$\text{Undefined}$

$-\frac{9}{10}$

Correct answer:

Explanation:

Use the following formula to find the slope of the line:

$\text{Slope}=\frac{y_2-y_1}{x_2-x_1}$

Remember that points are written in the following format:

(x,y)

For this line,

$\text{Slope}=\frac{2-2}{-11-12}$

$\text{Slope}=\frac{0}{-23}$

Simplify.

$\text{Slope}=0$

Report an Error

Example Question #496 : Functions And Lines

Find the slope of the line that passes through the following points:

(14, 22) and (-2, 22)

Possible Answers:

$\frac{35}{24}$

$\frac{11}{3}$

$\text{Undefined}$

Correct answer:

Explanation:

Use the following formula to find the slope of the line:

$\text{Slope}=\frac{y_2-y_1}{x_2-x_1}$

Remember that points are written in the following format:

(x,y)

For this line,

$\text{Slope}=\frac{22-22}{-2-14}$

$\text{Slope}=\frac{0}{-16}$

Simplify.

$\text{Slope}=0$

Report an Error

Example Question #497 : Functions And Lines

Find the slope of the line that passes through the following points:

(15, -7) and (18, 2)

Possible Answers:

$\frac{1}{3}$

$\frac{5}{4}$

Correct answer:

Explanation:

Use the following formula to find the slope of the line:

$\text{Slope}=\frac{y_2-y_1}{x_2-x_1}$

Remember that points are written in the following format:

(x,y)

For this line,

$\text{Slope}=\frac{2-(-7)}{18-15}$

Subtracting a negative number is the same as adding a positive number.

$\text{Slope}=\frac{2+7}{18-15}$

$\text{Slope}=\frac{9}{3}$

Simplify.

$\text{Slope}=3$

Report an Error

Example Question #91 : How To Find Slope Of A Line

Find the slope of the line that passes through the following points:

(-5, -2) and (-4, -1)

Possible Answers:

$\frac{7}{5}$

Correct answer:

Explanation:

Use the following formula to find the slope of the line:

$\text{Slope}=\frac{y_2-y_1}{x_2-x_1}$

Remember that points are written in the following format:

(x,y)

For this line,

$\text{Slope}=\frac{-1-(-2)}{-4-(-5)}$

Subtracting a negative number is the same as adding a positive number.

$\text{Slope}=\frac{-1+2}{-4+5}$

$\text{Slope}=\frac{1}{1}$

Simplify.

$\text{Slope}=1$

Report an Error

Example Question #92 : How To Find Slope Of A Line

Find the slope of the line that passes through the following points:

(-1, 5) and (15, 13)

Possible Answers:

$\frac{24}{3}$

$\frac{1}{2}$

$\frac{5}{6}$

Correct answer:

$\frac{1}{2}$

Explanation:

Use the following formula to find the slope of the line:

$\text{Slope}=\frac{y_2-y_1}{x_2-x_1}$

Remember that points are written in the following format:

(x,y)

For this line,

$\text{Slope}=\frac{13-5}{15-(-1)}$

Subtracting a negative number is the same as adding a positive number.

$\text{Slope}=\frac{13-5}{15+1}$

$\text{Slope}=\frac{8}{16}$

Simplify.

$\text{Slope}=\frac{1}{2}$

Report an Error

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Algebra 1 : Functions and Lines

Study concepts, example questions & explanations for Algebra 1

All Algebra 1 Resources

Example Questions

Example Question #85 : How To Find Slope Of A Line

Example Question #81 : How To Find Slope Of A Line

Example Question #87 : How To Find Slope Of A Line

Example Question #88 : How To Find Slope Of A Line

Example Question #89 : How To Find Slope Of A Line

Example Question #81 : How To Find Slope Of A Line

Example Question #496 : Functions And Lines

Example Question #497 : Functions And Lines

Example Question #91 : How To Find Slope Of A Line

Example Question #92 : How To Find Slope Of A Line

All Algebra 1 Resources

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