Hello :
answer : <span>D. (Y-1)=2(x+2)
because :
if x=1 ... y =7
if : x= -2 .... y= 1
the slope is : (1-7)/(-2-1) = -6/-3=2</span>
Hey the answer to your question is -6.4
Like terms are terms that have same variable. For example:
- 2x and x are like terms because they have same variable which is x.
- y and 3y both are like terms because they have same variable which is y.
- 2x and y both are not like terms because x-term and y-term are not the same variable or term.
The thing that you need to becareful is about the degree. Even though x² and x both are also x-term, but they are not considered like terms. So basically like terms are terms that have same variable and same degree.
Given the expression below:
From the expression:
- 2x and x are like terms.
- x² and x² are also like terms.
Arrange in better form for our calculation.
You might also want to arrange the expression degree (optional but recommended).
Answer
For -(4)^7
the - is not affected by the power of 7
For (-4)to the power of7 is the same as -4 to the power of 7
It is because 7 is an odd number,the - will not change .Therefore
(-4)^7= -(4)^7
But keep in mind that if the power is an even number , the - will change to + when the situation is (-4)
For example,(-4)^4=(4)^4
I am not good at English if there is any things that you feel confused you may ask