High School Math : High School Math

Study concepts, example questions & explanations for High School Math

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Example Questions

Example Question #1121 : High School Math

Solve for  if, .

Possible Answers:

Correct answer:

Explanation:

To solve an equation with  we must take the cube root of each side of the equation to get  by itself.

Doing this makes our problem look like 

Then we perform the cube root to get the answer  .

Example Question #1122 : High School Math

What is the slope of the line .

Possible Answers:

Correct answer:

Explanation:

In the standard form of a line  the slope is represented by the variable .

In this case the line  has a slope of .

The answer is .

Example Question #1 : How To Identify A Point In Pre Algebra

If the equation of a line is , what is the y-intercept?

Possible Answers:

Correct answer:

Explanation:

In the slope-intercept form of a line, , the y-intercept when the line intersects the y-axis.

It does this at .

So we plug  in for  in our equation  to give us .

Anything multiplied by  is  so .

Our coordinates for the y-intercept are .

Example Question #3 : How To Identify A Point In Pre Algebra

What is the y-intercept of the line ?

Possible Answers:

Correct answer:

Explanation:

In the standard form of a line  the y-intercept occurs when the line intersects the y-axis.

It does this at 

So we plug  in for  in our equation  to give us .

Anything multiplied by  is  so .

Our coordinates for the y-intercept are .

Example Question #4 : How To Identify A Point In Pre Algebra

What is the slope of a line that is parallel to ?

Possible Answers:

Correct answer:

Explanation:

Parallel lines have the same slope.

If an equation is in point-slope form, , we take the  from our equation and set it equal to the slope of our parallel line.

In this case 

The slope of our parallel line is .

Example Question #1123 : High School Math

Define the point based on the coordinate plane.

Number_3

Possible Answers:

Correct answer:

Explanation:

The point resides in quadrant I (the upper right quadrant), so both values must both be positive. The only possible solution is .

Example Question #1124 : High School Math

What is the slope of a line that is perpendicular to ?

Possible Answers:

Correct answer:

Explanation:

The slope of a perpendicular lines has the negative reciprocal of the slope of the original line.

If an equation is in point-slope form, , we use the  from our equation as our original slope.

In this case 

First flip the sign to get 

To find the reciprocal you take the integer and make it a fraction by placing a  over it. If it is already a fraction just flip the numerator and denominator.

Do this to make the slope 

The slope of the perpendicular line is .

Example Question #1125 : High School Math

What is the slope of the line with the equation ?

Possible Answers:

Correct answer:

Explanation:

In the standard form equation of a line, , the slope is represented by the variable .

In this case the line  has a slope of .

Therefore the answer is .

Example Question #2 : Graphing Lines

What is the slope of the line ?

Possible Answers:

Correct answer:

Explanation:

In the slope-intercept form of a line, , the slope is represented by the variable .

In this case the line

 

has a slope of .

The answer is .

Example Question #3 : Graphing Lines

What is the y-intercept of the line ?

Possible Answers:

Correct answer:

Explanation:

In the slope-intercept form of a line, , the y-intercept is when the line intersects the y-axis.

It does this at .

So we plug  in for  in our equation

 

to give us

Anything multiplied by  is  so

Our coordinates for the y-intercept are .

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