Grade 9 Lesson 5.1

Write an equation in slope-intercept form from the points (0, 3) and (-4, -1)

• y = x + 3

• y = x - 3

• y = x + 1

• y = 3x + 1

Write an equation in slope-intercept form from the points (-4, -2) and (-3, 5)

• y = 1/7x

• y = 1/7x + 26

• x = 7y + 26

• y = 7x + 26

A holiday meal costs $12.50 a person plus a delivery fee of $30.

• y = 30 + 12.5x

• y = 12.5 + 30

• y = 12.5 + 30x

• y = 30 - 12.5x

Sonia has $40 in her lunch account and pays $2 each day to eat lunch.

• y = 40 + 2x

• y = 40 - 2x

• y = 2 + 40x

• y = 2 - 40x

Which equation matches the table?

• y = 3x + 9

• y = x + 9

• y = x + 3

• y = 12x - 3

What is the equation of this line?

• 0

• undefined

• x = -2

• y = - 2