4-3 Writing Equations In Point-Slope Form Worksheet With Answers - Cognero

4-3 Writing Equations in Point-Slope Form

36. CCSS REASONING A company offers premium cable for $39.95 per month plus a one-time setup fee. The total

cost for setup and 6 months of service is $264.70.

a. Write an equation in point-slope form to find the total price y for any number of months x. (Hint: The point (6,

264.70) is a solution to the equation.)

b. Write the equation in slope-intercept form.

c. What is the setup fee?

ANSWER:

a. y − 264.70 = 39.95(x − 6)

b. y = 39.95x + 25

c. $25

Write an equation for the line described in standard form.

38. through (–4, 3) with y-intercept 0

ANSWER:

3x + 4y = 0

Write an equation in point-slope form for each line.

40.

ANSWER:

y − 3 = 4(x – 1)

42.

ANSWER:

y − 7 = − (x + 3)

Write each equation in slope-intercept form.

44.

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ANSWER:

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