Answer:
Step-by-step explanation:
Every time the line moves 5 units to the right, it moves up 4 units as well. Since the slope is the difference in y divided by the difference in x, the slope is 4/5. In addition, the y-intercept is -1. Therefore, the equation of this line is .
Answer:
x=3, y=-6
Step-by-step explanation:
As you know there are many ways to solve this question! First is Subsitutuion, Second is Elimination, and Third is Graphing!
Let’s begin with our detailed answer:
As you know subsitution is solving for a variable and then it can be used as a variable substitution to figure out x and y.
So in our system of equations:
I will just take one equation and solve for x but it actually dosent matter which variable you subsitutue and solve for.
To eliminate this question we can divide the top part by -3:
Let‘s sum these system of equation and we get:
We can now insert y as -6 and solve for x:
So,
Okay so in order to find your slope you're going to need to label your first set of coordinates! Since you know that -6 is X, you're going to label it X(subscript 1) and since you know that 7 is Y, you're going to label it Y(subscript 1).
You're going to want to do the same thing with the other set of coordinates as well. -6 will be X(subscript 2) and -2 will be Y(subscript 2).
Then you need to set the labeled coordinates up in the following formula:
m=y(subscript 2) - y(subscript 1) / x(subscript 2) - x(subscript 1)
and then solve for your slope!
Answer:
1. $58650
Step-by-step explanation:
We can solve this problem by the rule of three.
1 grain-----------------------10⁻³ g
x-------------------------------2.8 g
x=(1 grain * 2.8 g)/10⁻³ g=(1 grain * 2.8 g * 10³)/g=2800 grains.
answer: there are 2800 grains of sands