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Coordinate plane and distance — SHSAT practice questions

Coordinate plane and distance on the SHSAT Mathematics section covers midpoints on a number line and distances between points in the plane, including both a grid path of a horizontal segment then a vertical one and the straight-line segment joining the same points. A student has to recover a missing endpoint from a given midpoint, compare those two path lengths, and find the distance between two coordinates. Items are multiple choice with short setups; traps mix grid-path length with straight-line distance, drop a sign, or mishandle the midpoint. Choices are usually single numbers or simple algebraic values matching those errors.

  • Section: Mathematics 57 questions on the paper
  • 84 practice questions in the app

Sample questions

Question 1

On a number line, the midpoint of the segment joining points P(1)P(1) and Q(x)Q(x) is M(5)M(5). What is the value of xx?

  1. A4
  2. B6
  3. C9
  4. D10
Show answer

Answer: C — 9

The midpoint equation is 1+x2=5\dfrac{1+x}{2}=5. Therefore, 1+x=101+x=10 and x=9x=9.

Question 2

A path from (0,0)(0,0) to (3,4)(3,4) is a horizontal segment followed by a vertical segment. A second path is the straight-line segment joining the same points. How much longer, in units, is the first path than the second path?

  1. A2 units
  2. B5 units
  3. C7 units
  4. D12 units
Show answer

Answer: A — 2 units

The first path is 3+4=73+4=7 units. The straight-line path is 32+42=5\sqrt{3^2+4^2}=5 units. So the first path is 75=27-5=2 units longer.

Question 3

Points A(1,0)A(-1,0) and B(2,4)B(2,4) lie on a coordinate plane. What is the distance between the points?

  1. A1 unit
  2. B5 units
  3. C6 units
  4. D7 units
Show answer

Answer: B — 5 units

Use the coordinate differences as the legs of a right triangle: 32+42=5\sqrt{3^2+4^2}=5.

Practice 84 Coordinate plane and distance questions in the app

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