Ask questions and get helpful responses.

Math (HELP ASAP!)

1. Find the slope of the line that passes through (-2,1), (1,10).

a. 3
b. -3
c. 1/3
d. -1/3

2. Which equation represents a direct variation? What is the constant variation?

a.3y = 2x + 1; 1
b.y = -5x - 11; 5
c.4y = -12x; -3
d.y + 7 = 2x - 1; 7

3. Suppose y varies directly with x, and y = 12 when x = -3. What is the value of y when x = 6.

a. -24
b. 2
c. -2
d. -4

4. What is the equation of a line with a slope of -7 and a y-intercept of 6?

a.6y = -7x
b.y = 6x + (-7)
c.-7y = x + 6
d.y = -7x + 6

5. What is the equation of the line through (5,1) with a slope of -3?

a.y + 1 = 3(x + 5)
b.y - 1 = 3(x - 5)
c.y - 1 = -3(x - 5)
d.y + 1 = -3(x - 5)

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. I don't understand any of these.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  2. 1. Find the slope of the line. (1 point)
    2
    –2
    ½

    2. Find the slope of the line that passes through (‒2, 1), (1, 10). (1 point)
    3
    –3

    -⅓
    3. Which equation represents a direct variation? What is the constant of variation? (1 point)
    3y = 2x + 1; 1
    y = ‒5x ‒ 11; 5
    4y = ‒12x; ‒3
    y + 7 = 2x ‒ 1; 7
    4. Suppose y varies directly with x, and y = 12 when x = ‒3. What is the value of y when x = 6? (1 point)
    –24
    2
    –2
    –4
    5. What is the equation of a line with a slope of ‒7 and a y-intercept of 6? (1 point)
    6y = ‒7x
    y = 6x + (‒7)
    ‒7y = x + 6
    y = ‒7x + 6
    6. What is the equation of the line that passes through the points (0, 4) and (3, ‒2)? (1 point)
    y = 2x + 0
    y = ‒ 1/2x + (‒2)
    y = ‒2x + 4
    y = 1/2x+ 4
    7. What is the equation of the line through (5, 1) with a slope of ‒3? (1 point)
    y + 1 = 3(x + 5)
    y ‒ 1 = 3(x ‒ 5)
    y ‒ 1 = –3(x ‒ 5)
    y + 1 = ‒3(x ‒ 5)
    8. What is the equation of the given line in point-slope form? (1 point)
    y ‒ 1 = 2(x + 2)
    y ‒ 1 = 2(x ‒ 2)
    y – 2 = 2(x + 1)
    y ‒ 2 = (x + 2)

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  3. So what’s the answer?

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  4. anyone got the answers yet

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  5. Answers for mid-unit review practice are

    1. B
    2. A
    3. C
    4. A
    5. D
    6. C
    7. C
    8. A

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  6. >.< is completely correct!

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Respond to this Question

First Name

Your Response

Still need help? You can ask a new question.