Extra Set

Grade 8 · Unit 1 · L0 · Version A · F121

First five days

Name ________________

Date ________________

Period ________________

1.
Plot and name the quadrant (or axis) of (1, 4).
Answer. Quadrant I
Use the signs of x and y.
2.
Can 5, 9, 14 be the side lengths of a triangle?
Answer. no
5+9=14 ≤ 14.
3.
In which quadrant is the point (5, 4)?
Answer. Quadrant I
x is positive and y is positive → Quadrant I.
4.
Plot and name the quadrant (or axis) of (-4, 4).
Answer. Quadrant II
Use the signs of x and y.
5.
Can 7, 4, 15 be the side lengths of a triangle? Write a complete answer — Malik will compare with a partner.
Answer. no
7+4=11 ≤ 15.
6.
In which quadrant is the point (1, 4)? Write a complete answer — Malik will compare with a partner.
Answer. Quadrant I
x is positive and y is positive → Quadrant I.
7.
Plot and name the quadrant (or axis) of (0, 5). Write a complete answer — Ava will compare with a partner.
Answer. y-axis
Use the signs of x and y.
8.
Can 3, 8, 13 be the side lengths of a triangle? Write a complete answer — Grace will compare with a partner.
Answer. no
3+8=11 ≤ 13.
9.
In which quadrant is the point (−5, −1)? Write a complete answer — Theo will compare with a partner.
Answer. Quadrant III
x is negative and y is negative → Quadrant III.
10.
Plot and name the quadrant (or axis) of (4, 5). Write a complete answer — Nora will compare with a partner.
Answer. Quadrant I
Use the signs of x and y.
11.
Think
Grace tried this problem:
Can 6, 6, 16 be the side lengths of a triangle?
Grace wrote yes. That is not correct. What is the right answer?
Answer. no
Grace’s answer yes is off. 6+6=12 ≤ 16.
12.
Think
Nora tried this problem:
In which quadrant is the point (−1, 1)?
Nora wrote Quadrant II (check this). That is not correct. What is the right answer?
Answer. Quadrant II
Nora’s answer Quadrant II (check this) is off. x is negative and y is positive → Quadrant II.

Original extra practice. Keys are computed from the items, not guessed.

L0 · First five days