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I need a little help

I need a little help-example-1

2 Answers

3 votes

Step-by-step explanation:

It looks Iike the equation is in slope intercept form


y = mx + b

m is the slope

b is the y intercept

Finding B is easy, it's just where X = 0. On this table, Y is 1 when X is 0.

Finding the slope. We'll take two different (X,Y) coordinates. Let's do the first two rows (0,1) and (1,-1)

Next we apply the slope formula. That being


m = (y2 - y1)/(x2 - x1)

So plugging that in


= ( - 1 - 1)/(1 - 0)

That gives you -2/1, also known as -2

Now that we have everything, we can put the forumla together


y = - 2x + 1

Where -2 is the answer that belongs in the [?]

User Mikkun
by
7.8k points
4 votes

Answer:

y=-2x+1

Step-by-step explanation:

you can see that the x goes up by 1 every time. Y goes down by 2 every time, because 1-2=-1, -1-2=-3, etc. So the -2 goes in your m part of y=mx+b. Then you need to figure out what y is when x is 0, for your y-intercept, or your b part of y=mx+b. The picture makes it simpler, showing that when x is 0, y is 1. Therefore, 1 is your b part of y=mx+b. If you put it all together, it looks like this:

Y=-2x+1

User Justdvl
by
8.5k points

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