Answer:
(-1, -1) and (2, 2)
Step-by-step explanation:
Substitute for y in the first equation and solve the quadratic.
x = x^2 -2
x^2 -x -2 = 0 . . . . subtract x
(x -2)(x +1) = 0 . . . .factor
Solutions are the values of x that make these factors be zero:
x = 2, x = -1
Since y=x, the solutions are ...
(x, y) = (-1, -1) and (2, 2)
Answer:
-2 - 16 = -18
Step-by-step explanation:
-y+4c
You take the values for c and y and substitute them in the original equation.
It would then look like:
-(2) + 4(-4)
Solving that would be -2 -16 = -18
Answer:
1. If Adam burns 850 calories per hour
850×3=2550 calories for 3 hours
2. If the original price is 200$ and the discount is 30%
We get:
200 × 30
Which can be written as
200×0.3
=60
So 30% of 200 is 60
now to calculate the new price
200-60=140$
The new price is 140$
Remember, the slope-intercept equation is y=mx+b
Where m = slope and b = y-intercept.
So basically, you just plug in the missing values.
First, find the slope.
Equation for slope is : = y₂-y₁ / x₂-x₁
Plug in the missing values.
m = 4-9 / 2-12
m = -5 / -10
m = 1/2
Plug in 1/2 for m in y = mx + b
y = 1/2x + 9
It would be 9 because you just take the y-value of the first set of points.
~Hope I helped!~