(7th grade math)

The population of a town was 47,000 in 1950 and 83,000 in 2010. At this rate, what will the population be in 2015?

A.83,600
B.85,400
C.86,000
D.89,000

Question

(7th grade math)

The population of a town was 47,000 in 1950 and 83,000 in 2010. At this rate, what will the population be in 2015?


A.83,600
B.85,400
C.86,000
D.89,000

anonymous · Answer

are we considering linear growth?

anonymous · Answer

IMPORTANT LINE RELATED EQUATIONS TO KNOW AND MEMORIZE

slope formula
m= slope/ gradiant -- same thing
$$m=\frac{y_2-y_1}{x_2-x_1}$$

standard formula
$$Ax+By=C$$

point-slope formula
$$y-y_1=m(x-x_1)$$

slope-intercept formula
b= y-intercept -- in the form of (0,y)

$$y=mx+b$$