Question

I need help with the equation!

Answer 1

I think it’s y=w-10, since I see a pattern of subtraction

Answer 2

Yo faith!

Question 3: Use the equation y= mx + b where m equals slope or the rate of change and b equals the y-intercept. 

We already have b, which is 100. The reason why it's 100 is because the y-intercept is where the line crosses directly over the y-intercept. To do so, the x-value must be 0. 

Thus y = mx + 100

The slope/ROC can easily be said to be -10 as the x value changes by adding 1 and the y value changes by subtracting 10. However, let's just presume that we didn't know this and couldn't use mental math. 
To calculate the slope, we'll use the formula $\frac{y^2 - y^1}{x^2 - x^1}$ Take two points and insert them. I've chosen them for you:
1. (1,90)
2. (2,80)
$\frac{80 - 90}{2-1}$ ⇒$\frac{-10}{1}$ ⇒ -10

Therefore your equation, Faith, is y = -10x + 100

Question 1 of C:
Graph - If the ordered-pair points formulate a straight line.
Table - Constant rate of change/slope for the x and y values. 
Equation - No exponents are present.

Question 2 of C: Not sure what ''previous problems'' are given that they are not supplied.