## SephI Group Title Solve graphing. one year ago one year ago

1. SephI Group Title

$y = - \frac{ 3 }{ 2}x + 4$ How would I solve that? How would I do the Rise over Run when my fraction is negative?

2. SephI Group Title

@DarienCollup @Solmyr @Faman39 @KatherinePierce1864 @AlexPR787 @dennisjr

3. SephI Group Title

@lovekblue

4. Hero Group Title

Graph the first three points, then draw a line through them

5. SephI Group Title

HOw would I graph the fraction part?

6. Hero Group Title

You're focusing too much on the "fraction part". What you will be graphing are points on a line.

7. Hero Group Title

Remember, you still have y = mx + b, which is the formula for a line. The fraction part only represents the slope of the line.

8. SephI Group Title

Huh? What do you mean?

9. SephI Group Title

My school is telling me that I would graph (0, 4) and then graph the fraction with rise over run, but the fraction is negative and I don't know how to work with it.

10. Hero Group Title

Just focus on graphing the points.

11. Hero Group Title

Focus on the x and y intercepts

12. SephI Group Title

I don't understand.

13. SephI Group Title

Wouldn't I graph 4?

14. Hero Group Title

You found one of the points: (0,4)

15. Hero Group Title

Now find the x-intercept. Set y = 0, then solve for x

16. SephI Group Title

Uhhh..

17. Hero Group Title

Do you have any clue what's going on here?

18. SephI Group Title

I'm left with a fraction still. I don't know how to graph that fraction. I know it would be an rise over run process, but the fraction is negative. That changes it for me.

19. JayDS Group Title

What you need to graph is a straight line and the most important parts relating to it such as the x and y intercepts if they are any, in this case there are both.

20. SephI Group Title

What happens when the fraction is negative? Does it change? Would I make the 3 negative? Would both the numbers be negative?

21. SephI Group Title

I'm not graphing both the intercepts. It says graph the y-intercept first, and graph the slope, which is the fraction?

22. JayDS Group Title

just the 3 is negative.

23. JayDS Group Title

When you graph the two intercepts and connect them, it will automatically contain the slope/gradient of the line.

24. SephI Group Title

so (-3, 2)

25. Hero Group Title

$y = - \frac{ 3 }{ 2}x + 4$ $0 = - \frac{ 3 }{ 2}x + 4$ $\frac{ 3 }{ 2}x = 4$ $\frac{ 3x }{ 2} = 4$ $3x = 8$ $x = \frac{8}{3}$ $x = 2\frac{2}{3}$

26. JayDS Group Title

Slope/gradient is found by $M = \frac{y2-y1}{x2-x1}$ or rise/run your rise is -3 and run is 2

27. Hero Group Title

So the other point is $(2.67, 0)$

28. SephI Group Title

I think it just wants one answer .-.

29. SephI Group Title

This is basic 9th grade math.

30. Hero Group Title

No, you need at least two points to graph a line. You can't graph a line with only one point.

31. Hero Group Title

Didn't your teacher go over this with you?

32. SephI Group Title

I mean, I think they want me to find the rise over run by graphing (-3, 2) and 4.

33. Hero Group Title

You already have the rise over run

34. Hero Group Title

-3/4 is the rise over run

35. SephI Group Title

So: $-\frac{ 3 }{ 2 } = \frac{ -3 }{ 2 }$ Is this correct? When dealing with a negative fraction in rise over run, the top number becomes negative when putting it into an ordered pair?

36. SephI Group Title

?

37. Hero Group Title