All GRE Subject Test: Math Resources
Example Questions
Example Question #9 : Slope & Intercept
The points given lie on a line. Find the slope.
Slope is undefined.
slope =
rise = changes in y
run = changes in x
There is zero change in the coordinates.
The change in the coordinates is that the numbers are increasing by 2 or +2.
slope =
If the coordinates are the same, then it will be a horizontal line. The slope of a horizontal line is 0.
Example Question #51 : Calculus
Find the slope of a line that passes through and
The formula for slope is:
Example Question #52 : Calculus
Find the slope of a line that passes through the points and .
The formula for slope is:
Example Question #53 : Calculus
Find the slope of a line that passes through the points and .
Slope is undefined.
The formula for slope is:
Example Question #54 : Calculus
What is the slope of the line:
Step 1: The current equation is in standard form, where x and y are both on one side of the equal sign..
Step 2: Change the equation to slope-intercept form.. Move the y to the other side
Step 3: Move the constant to the other side:
Step 4: Divide by the coefficient in front of :
Step 5: Split the left side into two fractions and simplify:
Step 6. Locate the slope. The slope is the coefficient of the x term.
The slope is , or
Example Question #31 : Coordinate Geometry
Find the y-intercept of the equation of a line:
Step 1: Subtract from both sides:
Step 2: Divide by the coefficient of the y term..In this case, divide by .
Simplify and separate fraction on right side:
Step 3: Locate the y-intercept (also known as b):
If we compare our equation to the general slope-intercept form: , we see that ..
The value of is .
Example Question #51 : Calculus
What is the slope of the line:
Step 1: Move the to the other side...
Step 2: Divide by on both sides...
The slope is .
Example Question #52 : Calculus
What is the y-intercept of the equation ?
Step 1: Recall what the basic equation is for a line in slope-intercept form..
m=slope, b=y-intercept...
Step 2: Find m and b in the equation given...
m=, b=..
b=y-intercept=
Example Question #1 : Finding Equations Of Lines
What is the equation of the line (in slope-intercept form) that goes through the points: and ?
Step 1: Find the slope between the two points:
Step 2: Write the slope-intercept form:
Step 3. Find b. Plug in (x,y) from one of the points:
Step 4: Write out the full equation:
Example Question #1 : Finding Equations Of Lines
What is the equation of a line that passes through points and in slope-intercept form?
To find the equation of the line, first find the slope using the formula:
The points that the line passes through are and .
Then pick one set of points and place in the form . Either set of points will give you the same equation. Points were used.
Subtract from both sides of the equation.
The equation of the line in slope-intercept form or is
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