Question

Which equation best represents the line? (4 points)

a. y=3x + 3

b. y= 1/2x - 3

c. y= 1/2x + 3

d. y= 3x + 1/2

Answer 1

y=1/2x+3, or C

Explanation:

1. Find the slope.

To find slope, pick two coordinates and count up and over to find rise over run.

Use (-2, 2) and (0,3) for example.

Counting up and over gives you 1/2. This is your slope.

2. Look to see where the line crosses the y-axis to get the y-intercept.

Here, it crosses it at (0,3). 3 is the y-intercept.

3. The answers are written in slope-intercept form, or y=mx+b. mx represents slope and b represents the y-intercept.

y=1/2x+3