Answer:
y = -2x + 1
Rate of change is the slope,
Which is -2
Step-by-step explanation:
Slope: (-3-3)/(2--1) = -6/3 = -2
y = -2x + c
3 = -2(-1) + c
c = 1
y = -2x+1
rate of change -2
The rate of change of a linear function is the slope
m = (y2-y1)/(x2-x1)
= (-3-3)/(2--1)
= (-3-3)/(2+1)
=-6/3
=-2
We can use point slope form
y-y1 = m(x-x1)
y-3 = -2(x--1)
y-3 = -2(x+1)
Distribute
y-3 = -2x -2
Add 3 to each side
y-3 +3 = -2x-2+3
84
4 test grades with an average of 80 would have a total of 80x4=320.
75+83+78=236
320-236=84
probability : 1/3
Explanation:
probability = selected/total
Here,
