GRE Subject Test: Math : Slope & Intercept

Study concepts, example questions & explanations for GRE Subject Test: Math

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Example Questions

Example Question #51 : Gre Subject Test: Math

Find the slope of a line that passes through   and 

Possible Answers:

Correct answer:

Explanation:

The formula for slope is:

Example Question #52 : Calculus

Find the slope of a line that passes through the points   and .

Possible Answers:

Correct answer:

Explanation:

The formula for slope is:

Example Question #53 : Calculus

Find the slope of a line that passes through the points   and .

Possible Answers:

Slope is undefined.

Correct answer:

Explanation:

The formula for slope is:

Example Question #54 : Calculus

What is the slope of the line:

Possible Answers:

Correct answer:

Explanation:

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: 

Possible Answers:

Correct answer:

Explanation:

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 #11 : Slope & Intercept

What is the slope of the line: 

Possible Answers:

Correct answer:

Explanation:

Step 1: Move the  to the other side...



Step 2: Divide by  on both sides...



The slope is .

Example Question #12 : Slope & Intercept

What is the y-intercept of the equation ?

Possible Answers:

Correct answer:

Explanation:

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=

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