Answers

1. Answer:

   Step-by-step explanation:

   1. y = x + 3 2. y = −5x + 1 3. y = __

   2

   3

   x − 5

   y 4

   2

   O

   x

   −2

   −4 −2 2 4

   −4

   y 4

   2

   O

   x

   −2

   −4 −2 2 4

   −4

   y

   O

   x

   −2

   2

   −4 −2 2 4

   −4

   What slope-intercept form equation represents the line?

   4. 5. 6.

   y

   O

   x

   −2

   2

   4

   6

   −4 −2 2 4

   y

   O

   x

   −2

   2

   −4 −2 2 4

   −4

   y 4

   2

   O

   x

   −2

   −4 −2 2 4

   −4

   Write the equation in slope-intercept form of the line that passes through the

   given points.

   7. (−1, 3) and (−3, 1) 8. (−4, 8) and (4, 6) 9. (9, 2) and (−3, −2)

   10. Zachary purchased a computer for $1,800 on a payment plan. Three months

   after he purchased the computer, his balance was $1,350. Five months after

   he purchased the computer, his balance was $1,050. What is an equation that

   models the balance B after m months?

   11. What does the slope signify in this equation and why?

   y = 2x + 1

   y = x + 4 y = −__

   1

   4x + 7 y = __

   1

   3

   x − 1

   y = −5 y = −__

   1

   2

   x + 4

   B = −150m + 1800

   In the equation B = −150m + 1800, the slope signifies the

   monthly payment amount because the balance decreases by

   $150 each month.

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