Help please
Choose the linear inequality that describes each graph.
y < – 4x – 2 y > – 4x – 2 y ≤ – 4x – 2 y < 4x – 2
Are you familiar with graphing inequalities?
No, not really.. I barely understand Algebra
Can you graph a standard line?
Not really
What math level are you currently on?
Algebra 1B
Before learning to graph inequalities, you are taught to graph lines and plot basic points. Correct?
I really don't know.. because I took half of Algebra like independent studies there was no teacher to explain what I was taking.
Btw, asalaam walikum and i hope Yemen will be freed soon.
Okay. So then i'd have to tutor you on graphing lines. Are you ready?
wa alaikum asalam, and in shaa Allah hopefully thanks
Yes :)
Let's began with the first multiple choice. y < – 4x – 2
Every line has an equation written similar to the slope intercept form. The slope intercept form of equation is written like this : \(\Large y=mx+b\) m stands for slopes b stands for y-intercept (where the line touches the y-axis and has a x=0) and x and y are changing, while m and b are constants.
When we have inequalities, we'll have to try to see if from a y=mx+b perspective so we can get a sense on what line we are dealing with. To do that, you basically change any inequality symbols (>, <) to an equal sign. So, \(\large y ~<~ – 4x – 2\) Will eventually become, \(\Large y=-4x-2\)
The line is y=-4x-2 Is this equation already in a slope intercept form?
what does it mean when you have ≤ this sign
If we have this, let's say \(y\le x\) That means all the y values are less than or equal to x are shaded and the line is straight and bold, not dashed. It would have been a dashed line if the symbols were just less than or greater than (<,>). But when we add an equal sign next to the inequality, than it becomes a bold line. So, when graphing it, it will become like this.|dw:1439489341719:dw||dw:1439489445470:dw|
Join our real-time social learning platform and learn together with your friends!