domain is the numbes you are allowed to use for x
what I usually do is just find the numbers that aren't allowed in the domain. such numbers are numbers that cause a division by 0 or a squaer root of a negative number
given
, there are no numbers that you can use for x that will cause a division by 0 or a square root of a negative number
so domain is all real numbers or D={x | -∞<x<∞}
Answer:
Yes, the lines are perpendicular.
Hello :
<span>x= 2 + y ....(1)
3x – 7y= 10 ....(2)
subsct in (2) :
3(2+y) -7y = 10
6+3y -7y = 10
-4y = 4
y=-1
x = 2-1 = 1
</span><span>the solution of this system of equations is (1 , -1)</span>
Answer:
Step-by-step explanation:
Result:
-x = -12 Y = 3
Solution:
x = -3, Y = -1/4