Step-by-step explanation:
Distribute:
=−x2+−4x+−4+7
Combine Like Terms:
=−x2+−4x+−4+7
=(−x2)+(−4x)+(−4+7)
=−x2+−4x+3
Answer:
=−x2−4x+3
Y=-5x+1
Slope intercept form is y=mx+b
m is slope and b is the y-intercept
The answer is 6.89 because
6.89+14.52=21.41
So 21.41+(-14.52)=6.89
Answer with explanation:
3:1 means that person 1's income is three times person 2's income.
E.g.: if person 1 gets 150 per hour, person 2 gets 30 per hour.
1:3 means that person 1's income is one third of person 2's income.
E.g.: if person 1 gets 40 per hour, person 2 gets 120 per hour.
Answer: To determine if two lines are parallel or perpendicular, you have to look at the slopes. For the line y=kx+b, k is the slope.
For two lines y=k1x+b1 and y=k2X+b2 ,When K1=K2, two lines are parallel; when K1=-1/k2, two lines are perpendicular. It doesn't matter whatever b1, b2 are. Hence to save time, you only need to calculate k1 and k2.
To calculate the slope k of any line, you have to change the equation to y=kx+b
For -y=3x-2, k=3/(-1)=-3 (you divide -1 on each side of =, but you don't need to calculate -2/(-1))
For -6X+2y=6, K=6/2=3 (you first move the -6x to right side, it becomes 6x, then divide by 2)
Now you can get the answer: The two lines neither parallel nor perpendicular.
