Y2-y1/x2-x1 is the equation
All you have to do is add the number to the variable you need to. It works the same for subtraction instead you will put y-14 or any variable and number that is needed to subtract from it and remember when they say a number more than a variable it is + that number if they say a number less than a variable it is - that number .
y+14
You can easily do just one step to get the value of x.
x + 9 =24 subtract 9 from both sides
x + 9 - 9 = 24 - 9
Simplify:
x = 15I hope I helped
you.
Answer:
It is the first option: -
, -
, -560%, -2
Average = 77=(77+80+63+61+92+Next test)/6
Therefore, 77*6=77+80+63+61+92+Next test
Next test score = (77*6)- (77+80+63+61+92)= 89
