Answer:
25 students
Step-by-step explanation:
Using the line of best fit, we want to deduce the number of students predicted to be in the marching band given that there are 35 in the concert band.
To deduce this, what we need to do is to go to the point where we have 35 on the concert band axis i.e the x-axis, then trace it upto the line of best fit.
Then from the line of best fit, now trace to the y-axis.
This gives an answer 25.
Answer:
<h2>
y = (-2/3)x - 4</h2>
Step-by-step explanation:
As we move to the right from (-3,-2) to (6,-8), x increases by 9 and y decreases by 6. Thus, the slope of the line connecting these two points is
m = rise / run = -6 / 9 = -2/3.
Starting with the slope-intercept form of the equation of a straight line,
y = mx + b, and substituting -2/3 for m, -8 for y and 6 for x, we get the following equation, which enables us to solve for the y-intercept, b:
-8 = (-2/3)(6) + b, or
-8 = -4 + b
Then b = -4, and the desired equation is
y = (-2/3)x - 4.
Put the value of the letters with " over the original
So for A we have 3 in the front and 4.5 for A"
4.5/3 = 1.5
We can check if this is actually the scale factor but using the other numbers
The second numbers for A and A" are 6 and 9
6 * 1.5 = 9
So for point A it is 1.5
Use the same thing for G. That gives you 2
For B, you get 0.5
So the scale factors are 1.5, 2, and 0.5
Number 1 is a because you would minus 1 from both sides to get the x alone.
