Nancy wants to make a graph to show the relationship between the temperature of water, in degrees Celsius, and the time, in minu
tes, for which water is heated. She plots the following points: (0, 50), (1, 60), (2, 70), (3, 80), (4, 90)
She uses the following steps to plot the graph:
1. Label origin as (0, 0).
2. On x-axis, label Time in minutes.
3. On y-axis, label Temperature in degrees Celsius.
4. The scale on x-axis starts from 0 and goes up to 5 at intervals of 1.
5. The scale on the y-axis starts from 0 and goes up to 200 at intervals of 50.
Which of the following best describes the graph? (1 point)
It will not be spread out horizontally across the entire coordinate plane because in Step 4, Nancy selected an incorrect scale on the x-axis.
It will not be spread out vertically across the entire coordinate plane because in Step 5, Nancy selected an incorrect scale on the y-axis.
It will not be spread out horizontally across the entire coordinate plane because in Step 2, Nancy plotted time instead of temperature on the x-axis.
It will not be spread out vertically across the entire coordinate plane because in Step 3, Nancy plotted temperature instead of time on the y-axis.
First of all, the rank of the scale is too big for the graph. Water boiles at 100°C so extend it till the 200°C is unnecessary.
The y-axis scale is wrong because the celcius degree component of the graph´s points have a value within 50 and 90. Considering that one point of the graph´s scale is equal to 50°C, the hole set of points will be drawn between two point of the graph´s scale.
The x-scale is correct because the minutes of the points have a value within 0 and 4. The scale separates well the points and the rank is appropiate for the datums
The quadratic formula is -b + or - the square root of b squared - 4 times the a value and c value over 2a. So the roots would be -1.354249 and -6.645751. I believe these are the roots.
