All GRE Subject Test: Math Resources
Example Questions
Example Question #11 : Distance
How far apart are the lines and ?
To find the distance, choose any point on one of the lines. Plugging in into the first equation can generate our first point:
this gives us the point
We can find the distance between this point and the other line by putting the second line into the form :
subtract the whole right side from both sides
multiply both sides by
now we see that
We can plug the coefficients and the point into the formula
where represents the point.
Example Question #31 : Calculus
Find the distance between and
To find the distance, choose any point on one of the lines. Plugging in into the second equation can generate our first point:
this gives us the point
We can find the distance between this point and the other line by putting the second line into the form :
subtract the whole right side from both sides
multiply both sides by
now we see that
We can plug the coefficients and the point into the formula
where represents the point.
Example Question #2 : Find The Distance Between Two Parallel Lines
Find the distance between and
To find the distance, choose any point on one of the lines. Plugging in into the first equation can generate our first point:
this gives us the point
We can find the distance between this point and the other line by putting the second line into the form :
subtract the whole right side from both sides
multiply both sides by
now we see that
We can plug the coefficients and the point into the formula
where represents the point.
Example Question #3 : Find The Distance Between Two Parallel Lines
Find the distance between the lines and
To find the distance, choose any point on one of the lines. Plugging in into the first equation can generate our first point:
this gives us the point
We can find the distance between this point and the other line by putting the second line into the form :
subtract the whole right side from both sides
multiply both sides by
now we see that
We can plug the coefficients and the point into the formula
where represents the point.
Example Question #35 : Calculus
Find the distance between the points and .
None of the Above
Step 1: Let's define the distance formula. The distance between two sets of coordinates can be found by using the equation:
In the equation, d is the distance. Also, and are the coordinate points.
, .
Step 2: Plug in the values for the missing variables into the equation:
Step 3: Simplify the inside of the square root. Remember that two minus signs next to each other will change to a plus sign.
Step 4: Add up the numbers in the parentheses:
Step 5: Evaluate the exponents:
Step 6: Add the numbers under the square root.
Step 7: Simplify the number inside the square root as much as possible.
Let's divide by 4:
. We cannot break down 145 into another perfect square, so it has to go back into the radical. The square root of 4 is 2, and this will go on the outside.
The final answer is
Example Question #12 : Coordinate Geometry
Find the distance between the points and .
Step 1: The distance formula is defined as:
.
Step 2. Identify what and are.
Step 3: Substitute each value for its place in the distance formula.
We will get this:
Step 4: Simplify the inside of step 3.
Step 5: Simplify the parentheses:
Step 6: Evaluate each exponent:
Step 7: Reduce to lowest terms:
Divide by :
Step 8: Rewrite
Replace with :
The simplified answer to the question is
Example Question #21 : Distance & Midpoint Formulas
Given two points, and , find the midpoint.
Step 1: Define midpoint. The midpoint is a point located between two given points.. If I draw a line through these points, I get a straight line
Step 2: The midpoint formula is:
Step 3. Plug in the values:
Step 4: Simplify each fraction in Step 3:
Step 5: Convert each fraction to a decimal from step 4:
The midpoint is
Example Question #32 : Calculus
Find the length of the line that connects the points: and .
Step 1: Recall the distance formula:
Step 2: Find ...
Step 3: Substitute the values into the equation:
Reduce the parentheses:
Evaluate the exponents and add:
Step 4: Reduce into lowest terms...
Using rule of square roots, multiplying two roots with the same value on the inside just gives me the inside value..
The length of the line that connects both points is .
Example Question #22 : Distance & Midpoint Formulas
What is the distance between and
Step 1: Plug in values into the distance formula:
Step 2: Evaluate the inside...
Step 3: Simplify...
Example Question #32 : Functions And Graphs
Find the midpoint between and
To find the midpoint you must use the equation
Insert numbers
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