Algebra 1 : Functions and Lines

Study concepts, example questions & explanations for Algebra 1

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Example Questions

Example Question #2 : How To Find The Slope Of Parallel Lines

Find the slope of a line parallel to the line with the equation:

\(\displaystyle y=-10x+2\)

Possible Answers:

\(\displaystyle -10\)

\(\displaystyle 10\)

\(\displaystyle \frac{1}{10}\)

\(\displaystyle 1\)

Correct answer:

\(\displaystyle -10\)

Explanation:

Lines can be written in the slope-intercept format:

\(\displaystyle y=mx+b\)

In this format, \(\displaystyle m\) equals the line's slope and \(\displaystyle b\) represents where the line intercepts the y-axis.

In the given equation:

\(\displaystyle y=-10x+2\)

And it has a slope of:

\(\displaystyle m=-10\)

Parallel lines share the same slope.

The parallel line has a slope of \(\displaystyle -10\).

Example Question #1 : How To Find The Slope Of Parallel Lines

Find the slope of a line parallel to the line with the equation:

\(\displaystyle y=\frac{1}{2}x-5\)

Possible Answers:

\(\displaystyle -5\)

\(\displaystyle 2\)

\(\displaystyle \frac{1}{2}\)

\(\displaystyle -\frac{1}{2}\)

Correct answer:

\(\displaystyle \frac{1}{2}\)

Explanation:

Lines can be written in the slope-intercept format:

\(\displaystyle y=mx+b\)

In this format, \(\displaystyle m\) equals the line's slope and \(\displaystyle b\) represents where the line intercepts the y-axis.

In the given equation:

\(\displaystyle y=\frac{1}{2}x-5\)

And it has a slope of:

\(\displaystyle m=\frac{1}{2}\)

Parallel lines share the same slope.

The parallel line has a slope of \(\displaystyle \frac{1}{2}\).

Example Question #701 : Functions And Lines

Find the slope of a line parallel to the line with the equation:

\(\displaystyle y=-9x+21\)

Possible Answers:

\(\displaystyle -\frac{1}{9}\)

\(\displaystyle \frac{1}{9}\)

\(\displaystyle 9\)

\(\displaystyle -9\)

Correct answer:

\(\displaystyle -9\)

Explanation:

Lines can be written in the slope-intercept format:

\(\displaystyle y=mx+b\)

In this format, \(\displaystyle m\) equals the line's slope and \(\displaystyle b\) represents where the line intercepts the y-axis.

In the given equation:

\(\displaystyle y=-9x+21\)

And it has a slope of:

\(\displaystyle m=-9\)

Parallel lines share the same slope.

The parallel line has a slope of \(\displaystyle -9\).

Example Question #11 : How To Find The Slope Of Parallel Lines

Find the slope of a line parallel to the line with the equation:

\(\displaystyle y=-6x+22\)

Possible Answers:

\(\displaystyle \frac{1}{6}\)

\(\displaystyle 6\)

\(\displaystyle -\frac{1}{6}\)

\(\displaystyle -6\)

Correct answer:

\(\displaystyle -6\)

Explanation:

Lines can be written in the slope-intercept format:

\(\displaystyle y=mx+b\)

In this format, \(\displaystyle m\) equals the line's slope and \(\displaystyle b\) represents where the line intercepts the y-axis.

In the given equation:

\(\displaystyle y=-6x+22\)

And it has a slope of:

\(\displaystyle m=-6\)

Parallel lines share the same slope.

The parallel line has a slope of \(\displaystyle -6\).

Example Question #12 : How To Find The Slope Of Parallel Lines

Find the slope of a line parallel to the line with the equation:

\(\displaystyle y=\frac{3}{8}x-1\)

Possible Answers:

\(\displaystyle -\frac{3}{8}\)

\(\displaystyle \frac{8}{3}\)

\(\displaystyle \frac{3}{8}\)

\(\displaystyle -3\)

Correct answer:

\(\displaystyle \frac{3}{8}\)

Explanation:

Lines can be written in the slope-intercept format:

\(\displaystyle y=mx+b\)

In this format, \(\displaystyle m\) equals the line's slope and \(\displaystyle b\) represents where the line intercepts the y-axis.

In the given equation:

\(\displaystyle y=\frac{3}{8}x-1\)

And it has a slope of:

\(\displaystyle m=\frac{3}{8}\)

Parallel lines share the same slope.

The parallel line has a slope of \(\displaystyle \frac{3}{8}\).

Example Question #3991 : Algebra 1

Find the slope of a line parallel to the line with the equation:

 \(\displaystyle y=\frac{5}{6}x-12\)

Possible Answers:

\(\displaystyle \frac{5}{6}\)

\(\displaystyle -5\)

\(\displaystyle -\frac{5}{6}\)

\(\displaystyle \frac{6}{5}\)

Correct answer:

\(\displaystyle \frac{5}{6}\)

Explanation:

Lines can be written in the slope-intercept format:

\(\displaystyle y=mx+b\)

In this format, \(\displaystyle m\) equals the line's slope and \(\displaystyle b\) represents where the line intercepts the y-axis.

In the given equation:

\(\displaystyle y=\frac{5}{6}x-12\)

And it has a slope of:

\(\displaystyle m=\frac{5}{6}\)

Parallel lines share the same slope.

The parallel line has a slope of \(\displaystyle \frac{5}{6}\).

Example Question #701 : Functions And Lines

Find the slope of a line parallel to the line with the equation:

\(\displaystyle y=\frac{2}{11}x-\frac{1}{4}\)

Possible Answers:

\(\displaystyle 11\)

\(\displaystyle \frac{11}{2}\)

\(\displaystyle -\frac{2}{11}\)

\(\displaystyle \frac{2}{11}\)

Correct answer:

\(\displaystyle \frac{2}{11}\)

Explanation:

Lines can be written in the slope-intercept format:

\(\displaystyle y=mx+b\)

In this format, \(\displaystyle m\) equals the line's slope and \(\displaystyle b\) represents where the line intercepts the y-axis.

In the given equation:

\(\displaystyle y=\frac{2}{11}x-\frac{1}{4}\)

And it has a slope of:

\(\displaystyle m=\frac{2}{11}\)

Parallel lines share the same slope.

The parallel line has a slope of \(\displaystyle \frac{2}{11}\).

Example Question #706 : Functions And Lines

Find the slope of a line parallel to the line with the equation:

\(\displaystyle y=-\frac{8}{13}x+10\)

Possible Answers:

\(\displaystyle -\frac{13}{8}\)

\(\displaystyle -\frac{8}{13}\)

\(\displaystyle \frac{13}{8}\)

\(\displaystyle \frac{8}{13}\)

Correct answer:

\(\displaystyle -\frac{8}{13}\)

Explanation:

Lines can be written in the slope-intercept format:

\(\displaystyle y=mx+b\)

In this format, \(\displaystyle m\) equals the line's slope and \(\displaystyle b\) represents where the line intercepts the y-axis.

In the given equation:

\(\displaystyle y=-\frac{8}{13}x+10\)

And it has a slope of:

\(\displaystyle m=-\frac{8}{13}\)

Parallel lines share the same slope.

The parallel line has a slope of \(\displaystyle -\frac{8}{13}\).

Example Question #707 : Functions And Lines

Find the slope of a line parallel to the line with the equation:

\(\displaystyle y=\frac{12}{17}x-123\)

Possible Answers:

\(\displaystyle -\frac{12}{17}\)

\(\displaystyle \frac{17}{12}\)

\(\displaystyle 123\)

\(\displaystyle \frac{12}{17}\)

Correct answer:

\(\displaystyle \frac{12}{17}\)

Explanation:

Lines can be written in the slope-intercept format:

\(\displaystyle y=mx+b\)

In this format, \(\displaystyle m\) equals the line's slope and \(\displaystyle b\) represents where the line intercepts the y-axis.

In the given equation:

\(\displaystyle y=\frac{12}{17}x-123\)

And it has a slope of:

\(\displaystyle m=\frac{12}{17}\)

Parallel lines share the same slope.

The parallel line has a slope of \(\displaystyle \frac{12}{17}\).

Example Question #3995 : Algebra 1

Find the slope of a line parallel to the line with the equation:

\(\displaystyle y=-12x-12\)

Possible Answers:

\(\displaystyle 2\)

\(\displaystyle -12\)

\(\displaystyle 12\)

\(\displaystyle \frac{1}{12}\)

Correct answer:

\(\displaystyle -12\)

Explanation:

Lines can be written in the slope-intercept format:

\(\displaystyle y=mx+b\)

In this format, \(\displaystyle m\) equals the line's slope and \(\displaystyle b\) represents where the line intercepts the y-axis.

In the given equation:

\(\displaystyle y=-12x-12\)

And it has a slope of:

\(\displaystyle m=-12\)

Parallel lines share the same slope.

The parallel line has a slope of \(\displaystyle -12\).

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