Answer:
assuming the graph is a 10 by 10 there would be 10 diffrent whole number coordinates.
Answer: 
Step-by-step explanation:
Observe the picture attached.
Find the value of "x" and "y" using the Pythagoren Theorem:

If you solve for "a":

Where "a" is the hypotenuse and "b" and "c" are the legs.
In this case, for "x" you know that:

Then, the value of "x" is:

For "y" you can see that:

Subsituting values and solving for h, you get:

Y=50x+550
This is a linear equation of the form:
y=mx+b, where m=rate of change or slope and b=y-intercept.
The slope is the rate of change and the y-intercept is the value of y when x=0, which is the initial value. So in this context...
The change per week is $50.
The starting amount was $550
Distance = change in velocity*change in time
We can find the distance to her grandmas house by plugging in the know info.
Her velocity is 50MPH and her change in time is 3 hours and 3 minutes. Change those minutes into hours by diving by 60 minutes. 3/60 = 0.05 hours. So her total time is 3.05 hours. Do 3.05 hours times the 50MPH, notice the hours cancel and you get miles, 152.5 miles.
Now in the second problem, they give rate but we want time now. And we just solved the distance.
152.5 miles = 53MPH(t)
T being the time it takes
Divide the two numbers and the miles unit cancels, and you’re stuck with hours, 2.88 hours.