math 1: equations and inequalities, word problems, and lines and angles

Question 1

in solving a linear inequality,, if you cross multiply you must consider two cases, in which x is either

Answer 1

positive or negative (this changes the signs)

Question 2

if the discriminant is equal to zero the two roots are

Answer 2

-b/2a with multiplicity two

Question 3

if d is greater than zero and is not a perfect square you hve

Answer 3

2 unequal irrational roots

Question 4

distance =

Answer 4

rate x time

Question 5

r =

Answer 5

d/t

Question 6

t =

Answer 6

d/r

Question 7

sometimes, the word speed is used instead of

Answer 7

rate

Question 8

if the sum of the measures of two angles, is 180 degrees, the angles are

Answer 8

supplementary

Question 9

if the sum of the measures of two angles is 90 degrees, the angles are

Answer 9

complementary

Question 10

the sum of the measures of all nonoverlapping angles around a point is

Answer 10

360 degrees

Question 11

vertical angles have

Answer 11

equal measures

Question 12

if a pair of parallel lines is cut by a transversal that is perpendicular to the parallel lines, all eight angles are

Answer 12

right angles

Question 13

(if a pair of parallel lines is cut by a transversal that is not perpendicular to the parallel lines) four of the angles are … and four are …

Answer 13

acute; obtuse

Question 14

(if a pair of parallel lines is cut by a transversal that is not perpendicular to the parallel lines) all four acute angles are

Answer 14

congruent

Question 15

(if a pair of parallel lines is cut by a transversal that is not perpendicular to the parallel lines) all four obtuse angles

Answer 15

are congruent

Question 16

(if a pair of parallel lines is cut by a transversal that is not perpendicular to the parallel lines) the sum of the measures of any acute angle and any obtuse angle is

Answer 16

180 degrees

Question 17

if x degrees = y degrees (look at figure on pg 110), then lines

Answer 17

l and m are parallel