Use addition to solve the linear system of equations.

y=-3x+1
y+2x-4

answer:

step-by-step explanation:

the given expression is

we rewrite to obtain;

recall that;

we apply the difference of two squares formula to obtain;

we factor further to obtain;

this will give us;

answer:

m = (y2 - y1) / (x2 - x1)     | * (x2 - x1)

m * (x2 - x1) = y2 - y1     | + y1

m * (x2 - x1) + y1 = y2

answer d is correct.

y=10+x(0.5)

this is the way of writing that equation.

answer:

correct choice is b

step-by-step explanation:

let x% be your final test score, then the average of all test scores is

since you must have an average between 80% and 89%, then

x is measured in percent, then the greatest value of x can be 100%. you get that