145k views
5 votes
8.

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


A. y = 2x – 1

B. y = – 2x – 1

C. y =
(1)/(2)x-1

D. y =
(1)/(2)x+1

8. Write the slope-intercept form of the equation for the line. A. y = 2x – 1 B. y-example-1

2 Answers

0 votes

Answer:

A. y = 2x - 1

Explanation:

  1. First, find the slope. You can either use the rise/run method or use the slope formula, y2-y1/x2-x1. For the rise/run method, the rise is 4 and the run is 2, so... 4/2 = 2. If you want to use the slope formula, use the two coordinate sets, (1, 1) and (-1, -3). -3-1/-1-1 = -4/-2 = 2.
  2. Next, find your y-intercept. Use the slope-intercept formula, y = mx + b. M stands for the slope and b stands for your y-intercept. You can use either the coordinates (1, 1) or (-1, -3) to plug in for the x and y. In this scenario, I'll use (1, 1).

y = mx + b

Plug in your values. (2 for m)

1 = 2(1) + b

Simplify.

1 = 2 + b

Subtract 2 from both sides.

-1 = b

Finally, form your equation together.

y = 2x - 1

User JoshJoshJosh
by
8.4k points
3 votes

Answer:

y = 2x – 1

Explanation:

i got a 100%

User Mjkaufer
by
7.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories