Step-by-step explanation: (8,5)(-12,-9)slope = (-9 - 5) / (-12 - 8) = -14/-20 = 7/10y = mx + bslope(m) = 7/10use either of ur points.....(8,5)....x = 8 and y = 5now we sub and find b, the y int5 = 7/10(8) + b5 = 56/10 + b5 - 56/10 = b50/10 - 56/10 = b-3/5 = bso ur equation is : y = 7/10x - 3/5.....now we put it in standard formy = 7/10x - 3/5...multiply by 1010y = 7x - 6.....subtract 7x-7x + 10y = -6....multiply by -17x - 10y = 6So.....7x - 10y = 3.... IS NOT a good model. Because ur points are not a solution to ur equation.
y = mx + b slope(m) = 7/10 use either of ur points.....(8,5)....x = 8 and y = 5 now we sub and find b, the y int 5 = 7/10(8) + b 5 = 56/10 + b 5 - 56/10 = b 50/10 - 56/10 = b -3/5 = b
so ur equation is : y = 7/10x - 3/5.....now we put it in standard form
y = 7/10x - 3/5...multiply by 10 10y = 7x - 6.....subtract 7x -7x + 10y = -6....multiply by -1 7x - 10y = 6
So.....7x - 10y = 3.... IS NOT a good model. Because ur points are not a solution to ur equation.
So if you take 10% of $19.50, you have $1.95. If you multiply $1.95 by 6, you get $11.70 which is 60% of the original cost of the book. Add $11.70 to $19.50 and you have $31.20.
Answer: I do not think that failing one class will effect your entire 6th grade year. Although, this is best discussed with your teachers or parents/guardians.
