Answer:
(1, 3 )
Step-by-step explanation:
Substitute x = 1 into the equation
y = × = × 6 = 3
(1, 3 ) ← with output value y = 3
Answer:
She should buy one that accords to her budget and her needs
Answer: y=4x-4
Step-by-step explanation:
To find the equation fo the line parallel to the given line, we can use the given point to find the y-intercept. We know that the slope must stay the same because parallel lines NEVER touch or cross. This means that the slope MUST be the same.
y=4x+b
We can use the given point to find the y-intercept.
8=4(3)+b [multiply]
8=12+b [subtract both sides by 12]
b=-4
Now that we have found the y-intercept, we can complete the equation.
y=4x-4
Answer:
$34.88
Step-by-step explanation:
If the discount is 20%, then the sale price is 80% of the full (original) cost:
0.80($40.00) = $32.
Sam has to pay 9% sales tax on this $32. The total cost of his order would then be 1.09($32) = $34.88. If desired, you could write this as the equivalent $32 + 0.09($32).
Answer:
x= -7, y=2
Step-by-step explanation:
Since y = x+9 you can plug y as x+9 in the other equation
3x+8(x+9)= -5
3x+8x+72= -5
11x= -77
x= -7
y= x+9
y= -7+9
y= 2