Answer:
i) y=-2x-7 and (ii) 2y-x=1
substitute i into ii
and solve for X
2(-2x-7)-x=1
-4x-14-x=1
-5x-14=1.........adding similar terms
-5x=15
X=-3......by dividing both side by -5
Then to solve for Y substitute X=-3 into one equation.
take eqn i) Y=-2(-3)-7
Y=6-7
Y=-1
in order pair form (X,Y)=(-3,-1)
An item cost P dollars. If the price increases by 11%. The new price can be represented by the expression P+0.11P.
Use the distance formula (sqrt (x2-x1)^2 + (y2-y1)^2). Plug it in. Answer: (sqrt 32) or 5.66 units
180 Degrees
Hope I helped, and good luck!
Answer:
x=-2 y=-6
Step-by-step explanation
5x+4=-3x-12
+3 +3x
8x+4=-12
-4 -4
8x=-16
÷8 ÷8
x=-2
Looking for y too, plug x into the original equation
5(-2)+4
-10+4
-6
y=-6