SSAT Upper Level Math : Geometry

Study concepts, example questions & explanations for SSAT Upper Level Math

varsity tutors app store varsity tutors android store

Example Questions

Example Question #3 : How To Find Out If A Point Is On A Line With An Equation

Which of the following points lies on the line with the equation ?

Possible Answers:

Correct answer:

Explanation:

To find if a point is on the line, plug in the x-coordinate of the answer choice into the given equation. If the resulting value for the y-coordinate matches that of the answer choice, then that point is on the line.

For ,

Example Question #4 : How To Find Out If A Point Is On A Line With An Equation

Which of the following points lies on the line with the equation ?

Possible Answers:

Correct answer:

Explanation:

To find if a point is on the line, plug in the x-coordinate of the answer choice into the given equation. If the resulting value for the y-coordinate matches that of the answer choice, then that point is on the line.

For ,

Example Question #5 : How To Find Out If A Point Is On A Line With An Equation

Which of the following points lies on the line with the equation ?

Possible Answers:

Correct answer:

Explanation:

To find if a point is on the line, plug in the x-coordinate of the answer choice into the given equation. If the resulting value for the y-coordinate matches that of the answer choice, then that point is on the line.

For ,

Example Question #6 : How To Find Out If A Point Is On A Line With An Equation

Which of the following points is on the line with the equation ?

Possible Answers:

Correct answer:

Explanation:

To find if a point is on the line, plug in the x-coordinate of the answer choice into the given equation. If the resulting value for the y-coordinate matches that of the answer choice, then that point is on the line.

For ,

Example Question #2 : How To Find Out If A Point Is On A Line With An Equation

Consider the lines described by the following two equations:

4y = 3x2

 

3y = 4x2

Find the vertical distance between the two lines at the points where x = 6.

Possible Answers:

44

48

12

21

36

Correct answer:

21

Explanation:

Since the vertical coordinates of each point are given by y, solve each equation for y and plug in 6 for x, as follows:

Taking the difference of the resulting -values give the vertical distance between the points (6,27) and (6,48), which is 21.

Example Question #3 : Other Lines

For the line

Which one of these coordinates can be found on the line?

Possible Answers:

(3, 6)

(9, 5)

(6, 12)

(6, 5)

(3, 7)

Correct answer:

(3, 6)

Explanation:

To test the coordinates, plug the x-coordinate into the line equation and solve for y.

y = 1/3x -7

Test (3,-6)

y = 1/3(3) – 7 = 1 – 7 = -6   YES!

Test (3,7)

y = 1/3(3) – 7 = 1 – 7 = -6  NO

Test (6,-12)

y = 1/3(6) – 7 = 2 – 7 = -5  NO

Test (6,5)

y = 1/3(6) – 7 = 2 – 7 = -5  NO

Test (9,5)

y = 1/3(9) – 7 = 3 – 7 = -4  NO

Example Question #52 : Lines

Solve the following system of equations:

–2x + 3y = 10

2x + 5y = 6

Possible Answers:

(3, 5)

(2, 2)

(3, –2)

(–2, –2)

(–2, 2)

Correct answer:

(–2, 2)

Explanation:

Since we have –2x and +2x in the equations, it makes sense to add the equations together to give 8y = 16 yielding y = 2.  Then we substitute y = 2 into one of the original equations to get x = –2.  So the solution to the system of equations is (–2, 2)

Example Question #51 : Coordinate Geometry

Which of the following sets of coordinates are on the line y=3x-4?

Possible Answers:

(2,2)

(1,5)

(3,4)

(1,2)

(2,-2)

Correct answer:

(2,2)

Explanation:

(2,2) when plugged in for y and x make the linear equation true, therefore those coordinates fall on that line.

y=3x-4

Because this equation is true, the point must lie on the line. The other given answer choices do not result in true equalities.

Example Question #52 : Coordinate Geometry

Which of the following points can be found on the line \small y=3x+2?

Possible Answers:

Correct answer:

Explanation:

We are looking for an ordered pair that makes the given equation true. To solve, plug in the various answer choices to find the true equality.

Because this equality is true, we can conclude that the point lies on this line. None of the other given answer options will result in a true equality.

Example Question #1 : How To Find Out If Lines Are Perpendicular

Two perpendicular lines intersect at the point . One line passes through point ; the other passes through point . Evaluate .

Possible Answers:

Correct answer:

Explanation:

The line that passes through  and  has slope 

.

The line that passes through  and  , being perpendicular to the first, has as its slope the opposite reciprocal of , or 

Therefore, to find , we use the slope formula and solve for :

Learning Tools by Varsity Tutors