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I need help i literally don't understand any of these questions

I need help i literally don't understand any of these questions-example-1
I need help i literally don't understand any of these questions-example-1
I need help i literally don't understand any of these questions-example-2
User Koni
by
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1 Answer

3 votes

Answer: It is below with explanations on how to do it! :D

Explanation:

1. First one shows a graph and a line. Remember, the equation for this is y = mx + b. The point that crosses the y-axis is 0. So far, the equation looks like this: y = mx + 0. In order to find the slope, we have to choose another point on the graph. I will choose the point (-4, -2). The slope is the direction of the line travelling from left to right. So to get from (-4, -2) to the point 0, aka origin, we have to go up 2 units and move 4 units to the right. This method is called rise over run. Now the slope is 2 over 4 -> 2/4.

Final answer is y = 2/4x + 0

Simplified version is y = 1/2x + 0

That is your equation in slope intercept form!

2. The second one shows a graph and is asking to write an equation in slope-intercept form. Here is the equation for that -> y = mx+b

M is the slope, and b is the y-intercept (where the point crosses the line on the y-axis).

So, in this case, M=4 and b=0

Plug it into the equation, y = 4x + 0

The graph is attached below (I did not draw it but I took a screenshot from a video that shows it)

I also attached the graph for you for the last question!

I hope this helps you :)

I need help i literally don't understand any of these questions-example-1
I need help i literally don't understand any of these questions-example-2
User Okigan
by
8.6k points