Una parte de S 8000 se invirtió al 2 % de interés anual y el resto al 7 % . Al final del primer año, la cantidad total “de inversión más interés fue
de $ 8312 . ¿Cuánto dinero se invirtió en cada tipo de interés?
ULJ
Inversión al 2%
Inversión al 7 %
Hecho

a

explanation:

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get

quit

step-by-step explanation:

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is