Math Core

Unit 3 · Test

Unit 3 test: Parallel and Perpendicular Lines

15 questions. Answer them all, then submit to see your score. Solutions unlock after you submit.

This test covers angle pairs formed by a transversal, proving lines parallel, slopes of parallel and perpendicular lines, and writing equations of parallel and perpendicular lines.

Problems 1–7 use this diagram, in which lines mm and nn are cut by transversal tt. Assume m∥nm \parallel n only when a problem says so.

Lines m and n cut by transversal t.
Question 1

What kind of angle pair are ∠2\angle 2 and ∠7\angle 7?

Question 2

Given m∥nm \parallel n and m∠7=57∘m\angle 7 = 57^\circ, find m∠4m\angle 4, in degrees.

Enter a number. Fractions like 3/4 and sqrt(2) are OK.

Question 3

Given m∥nm \parallel n, m∠1=(9x+4)∘m\angle 1 = (9x + 4)^\circ and m∠5=(7x+30)∘m\angle 5 = (7x + 30)^\circ. Find m∠1m\angle 1, in degrees.

Enter a number. Fractions like 3/4 and sqrt(2) are OK.

Question 4

Given m∥nm \parallel n, m∠4=(3x+1)∘m\angle 4 = (3x + 1)^\circ and m∠6=(x+7)∘m\angle 6 = (x + 7)^\circ. Find m∠6m\angle 6, in degrees.

Enter a number. Fractions like 3/4 and sqrt(2) are OK.

Question 5

If ∠3≅∠6\angle 3 \cong \angle 6, which reason justifies the conclusion m∥nm \parallel n?

Question 6

Suppose m∠2=(2x+6)∘m\angle 2 = (2x + 6)^\circ and m∠8=(4x−6)∘m\angle 8 = (4x - 6)^\circ. What value of xx makes m∥nm \parallel n?

Enter a number. Fractions like 3/4 and sqrt(2) are OK.

Question 7

Suppose m∠4=121∘m\angle 4 = 121^\circ and m∠5=119∘m\angle 5 = 119^\circ. What can you conclude?

Question 8

Lines aa, bb, cc and dd lie in one plane, with a⊥ba \perp b, b⊥cb \perp c and c∥dc \parallel d. Which statement must be true?

Question 9

What is the slope of a line perpendicular to 5x+2y=45x + 2y = 4?

Enter a number. Fractions like 3/4 and sqrt(2) are OK.

Question 10

Line ff passes through (−3,2)(-3, 2) and (1,−4)(1, -4). Line gg passes through (0,1)(0, 1) and (6,5)(6, 5). Classify the lines.

Question 11

The line through (2,k)(2, k) and (5,7)(5, 7) is parallel to y=43x−1y = \dfrac{4}{3}x - 1. Find kk.

Enter a number. Fractions like 3/4 and sqrt(2) are OK.

Question 12

Write an equation of the line through (−4,1)(-4, 1) that is parallel to y=−2x+3y = -2x + 3. (You can type the whole equation or just the right side of y=…y = \ldots.)

Enter an expression, e.g. 3x^2 - 2x + 1

Question 13

Write an equation of the line through (6,−2)(6, -2) that is perpendicular to 3x+4y=123x + 4y = 12.

Enter an expression, e.g. 3x^2 - 2x + 1

Question 14

Write an equation of the perpendicular bisector of the segment with endpoints (−3,5)(-3, 5) and (5,1)(5, 1).

Enter an expression, e.g. 3x^2 - 2x + 1

Question 15

Find the distance from the point (10,0)(10, 0) to the line y=3xy = 3x. Give an exact answer or round to the nearest hundredth.

Enter a number. Fractions like 3/4 and sqrt(2) are OK.