Question

HELP ME PLEASE! So I’m working on this practice page before I start my quiz but I don’t understand these two problems, I was hoping someone would help me.

Answer 1

Answer: 3 . y = -1/3 + 4/3 4. y= 1/2x -6

Explanation:

3. In the first graph they have the coordinates, (-2,2) and (4,0). We have to solve for the slope and the y-intercept in other to write and equation.

To find the slope we have to find the change in the y values and divide it by the difference in the x values.

2-0 = 2

-2 -4 = -6

2/-6 = -1/3 Now we know that the slope is -1/3 so we need to find the y-intercept.

2= -1/3(-2) +b where be is the y intercept.

2= 2/3 + b

-2/3 -2/3

b= 4/3

Now we could write the equation as y= -1/3 + 4/3

4. The same with number 4.

We will find the slope and the y intercept by using some points on the number line.

(0,-6) This already have the y-intercept graphed so we will need to just find the slope.

(0,-6)

(4,-4)

-6 - (-4) = -2

0 - 4 = -4

-2/-4 = 1/2

Equation: y = 1/2x -6

Answer 2

Answer: y = 1/2x - 6

Explanation:

#4 We are going to use slope intercept form, (y = mx+b)

1. The line crossing the y-intercept at (0,-6)

2. The slope is 1/2 (increasing by 1 then over 2 --> RISE OVER RUN)

3. Make the equation: y= 1/2x - 6