Writing Linear Equations

Question 1

x + y =

Revolt · Accepted Answer

2; +: -3; =: 19

Question 2

x + y =

Revolt · Accepted Answer

-3

Question 3

x + y =

Revolt · Accepted Answer

19

Question 4

Write the equation of the line that passes through the points (7, –4) and (–1, 3), first in point-slope form, and then in slope-intercept form.

Revolt · Accepted Answer

✔ –7/8; The slope of the line is .: –7/8; When the point (7, –4) is used, the point-slope form of the line is .: y+ 4 = (–7/8)(x – 7); The slope-intercept form of the line is .: y = (–7/8)x + (17/8)

Question 5

y – 7 = (–4/3)(x + 4)y + 7 = (–3/4)(x – 4)y – 4 = (–8/7)(x + 7)✔ y+ 4 = (–7/8)(x – 7)

Revolt · Accepted Answer

✔ y+ 4 = (–7/8)(x – 7)

Question 6

y = (–4/3)x + (5/3)✔ y = (–7/8)x + (17/8)y = (–8/7)x – 4X y = (–3/4)x – 4

Revolt · Accepted Answer

✔ y = (–7/8)x + (17/8)

Question 7

Which equations represent a line that passes through the points given in the table? Check all that apply.

Revolt · Accepted Answer

y – 2 = –(x + 10); y – 1 = –(x + 4); y = –x +

Question 8

What is the equation of the line in slope-intercept form?

Revolt · Accepted Answer

y = x +

Question 9

The slope of the line is .

Revolt · Accepted Answer

–300; The slope of the line is .: –300; The y-intercept of the line is .: 2,000; The linear function is .: f(x) = –300x + 2,000

Question 10

Pedro works as a newspaper deliverer. He receives a base pay plus an additional amount per newspaper delivered. Last week, Pedro delivered 5 newspapers and earned $37.50. This week, he delivered 20 newspapers and earned $75. Let x equal the number of newspapers Pedro delivers and y be the earnings he receives in dollars. Which linear function models the scenario?

Revolt · Accepted Answer

g(x) = 2.5x + 25

Writing Linear Equations Answers

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