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Soloha48 [4]
3 years ago
9

Help my small brain understand.

Mathematics
2 answers:
Serhud [2]3 years ago
5 0

Answer:

y = 7x

Step-by-step explanation:

1: slope (m)- as the x-variable goes up by 1, the y-variable goes up by 7. So, the ∆y/∆x = 7. Therefore,<em> the slope is 7</em>.

2: y-intercept (b)- When x = 0, <em>y also has to be 0</em>, since all of the x-variables multiplied by 7 gives the related y-variable, without any adding.

3: plug in- y = 7x + 0 --> y = 7x

marin [14]3 years ago
3 0

You have to write a linear equation that fits these points. For this, you will need to find the slope and the y intercept of the points.

To find the slope, get any two points provided. I will use (1,7) and (2,14). The formula to find the slope is y²-y/x²-x. This just means that you subtract the first y value from the second, so 14-7=7, and divide by the second x value minus the first, so 2-1=1. Now you divide 7/1=7, and that is your slope.

The y intercept is the y coordinate when x is zero. You can see that the pattern in the table is to add 7 each time, so when x is 0 y would be 0 as well. This means that your y intercept is 0.

Now to write the actual equation, m=slope and b=y intercept. Just plug in your values into the y=mx+b equation to get y=7x+0, or just y=7x. ;)

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