Rate of Change and Introduction to Slope
Instruction Active
Determining the Rate of Change of a Line on a Graph
1219
000
Height (inches)
The graph shows the height of a tree over time. What
can you deduce the rate of change to be from 2 years
to 4 years?
2 inch per year
2.5 inches per year
5 inches per year
10 inches per year
need help

step-by-step explanation:

sry but any answer choices

maybe i can

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15