Answer: (D)
Explanation:
Just a note on writing down these expressions: I recommend using parentheses whenever you can to avoid misinterpretation. An expression 1/x-1/y / 1/x+1/y could be interpreted by someone as 1/x-(1/y / 1/x)+1/y, which is a different thing.
<span>B) y = -3x3
</span>-----------------------------------
Answer:
y = -2x-5
Step-by-step explanation:
So to calculate the slope the equation is y1-y2/x1-x2. We substitute in two points, let's use (-3,1) as x1 and y1, and (1,-7) as x2 and y2. Put those points in the equation and you get -7-1/1-(-3), which is -2. Now you have y=-2x+b
To get b plug in a pair of points to the equations, say (1,-7). -7=-2(1)+b, solve that and you get b=-5.
So y=-2x-5.
The answer would be -8, idk of the picture will show. hope this helped.
Answer:
x=8,-2
Step-by-step explanation:
Add 10 to both sides.
{(x-3)}^{2}=15+10
2 Simplify 15+10+25
(x−3) ^2=25
3 Take the square root of both sides.
x-3=+or-√25