Which information is not necessary to solve this story problem?

mindy had $90 to spend on fruit. she bought 12 apples and 8 melons on monday. on wednesday, she bought 8 apples and 6 melons.

that she spent her money on fruit, if the question states the items she bought it is unnecessary to state that she spent her money on fruit  

Step-by-step explanation:

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

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