Answer:
Step-by-step explanation:
PART A
Remember Scatter plot is a type of x-y graph
X is the horizontal line and will be the AGE
Y is the vertical lien and will be WEIGHT
PART B
Slope-intercept form is y = mx + b
m is the slope of the line, determined by calculating "change of y divided by change of x"
Age 2 and weight 32 would be the point (2, 32) on the graph
Age 8 and weight 60 is the point (8, 60) in the graph
to calculate slope solve m = 60-32 =
8-2
b is the y-intercept or the place on the graph where the line crosses the vertical line (y-axis)
Calculate b by plugging in one of the graph points (i.e (2, 32)) into the slope-intercept form along with the value of m you just calculated.
32 = m(2) + b plug in your calculated value for m to solve for b
once you have solved for m and b, put those number into the equation y = mx + b
PART C
Once you have the slope-intercept form, you can solve the equation for y (weight of the girl), but plugging in 14 for x (since that is her age).
i.e. if the equation was y = 50x + 100
y = (50 * 14) + 100 = 650 -- which is an unrealistic weight for the girl but a good example on how to solve problem.
