4.1 and 4.2 algebra review

Write the equation of the line in slope-intercept form.

• y = (-2/3)x + 4

• y = (2/3)x + 4

• y = (3/2)x + 4

• y = (-3/2)x + 4

Write the equation of a line with a slope of -3 and y intercept of 8

• x = 8
• y = -3
• y = 8x -3
• y = -3x + 8

A music club membership costs $15 to start and $8 per cd. Write an equation.

• C = 15 + 8
• C = 15x +8
• C = 8x + 15
• none of these

Which of the following is the slope-intercept form?

• m = (y₂ - y₁)/(x₂ - x₁)

• y = mx + b

• y - y₁ = m(x - x₁)

• ax + by = c

Write the equation of the line.

• y = -1/3x - 2
• y = 1/3x - 2
• y = 3x - 2
• y = -3x - 2

Which of the following is the equation of the line that has a slope of 3 and passes through the point (0, 9)?

• y = -3x + 12

• y = 3(x + 9)

• y = 3x + 9

• y = 3x - 3

What does the m represent, in this equation?

y = mx + b

• slope

• y-intercept

• initial value

• x-intercept

What does the b represent, in this equation?

y = mx + b

• slope

• y-intercept

• rate of change

• x-intercept

What is the equation of the line with slope 5 and y-intercept 3?

• y = 5x + 3

• y = 3x + 5

• 3 = 5x + b

• 5 = 3x + b