Mathematics Quiz

The standard form of the equation of a line is Ax +By = C. Which of the following equations is written in standard form?

• 3𝑦 =2𝑥+8

• 𝑥+5𝑦 =6

• −2𝑦 =𝑥+2

• 2+𝑦 =5

Which of the following equations below is written in slope-intercept form?

• y = -23x + 5

• 4𝑥−3𝑦=10

• x + y = 2

• x =2𝑦−6

Allan, whose favorite subject is Mathematics, is asked by his teacher to write the equation 15x +5𝑦 = −35 in slope-intercept form. He answered 5𝑦 =−15𝑥−7. Is Allan correct?

• Yes, because he loves mathematics.

• Yes, because it is already the simplified answer.

• No, because the term −15𝑥 must be positive.

• No, because the simplified answer must be 𝑦 = −3𝑥 −7.

Determine the slope and y-intercept of the line 2x = y +4.

• m = 2; b = -4

• m = 2; b = 4

• m = -2; b = -4

• m = -2; b = 4

The line passes through the point (0,3) and has a slope of 2. What is the equation of a line in slope-intercept form?

• 𝑦 = 3

• y = -12x

• y = 2𝑥 + 3

• 𝑦 = 3𝑥 + 2

Jojo's father was able to harvest 100 kilos of ripe mangoes. He sold the mangoes for Php 90 per kilo. He wanted to determine how much he would earn from his harvest. What equation represents the earnings of Jojo's father?

• y = 90x

• y=100x

• y =90 + 100

• y =100x + 90

Which of the following is NOT a symbol of linear inequality?

• ≠

• ≥

• =

• <

Which of the following shows linear inequality in two variables?

• 6𝑎 - 3𝑎 = 9

• k + 4 < 8+2k

• 3𝑝 ≤ 4+𝑝

• 21𝑚 ≥ 2𝑛− 15

Which of the following inequalities is the same as "the sum of 2𝑥 and 𝑦 is at least 20"?

• 2𝑥 + 𝑦 ≥20

• 2𝑥 + 𝑦 >20

• 2𝑥 + 𝑦 ≤ 20

• 2𝑥 + 𝑦< 20

Kim is asked what inequality symbol to use to translate at least in the mathematical sentence 8 times a number y minus 3 times a number x is at least 30. Her answer is >. Is she correct?

• Yes, because the symbol for at least is <.

• Yes, because the symbol for at least is > .

• No, because the symbol for at least is ≥.

• No, because the symbol for at least is ≤.