If my explanation doesn't make sense, there are some pretty good utube videos about it.
Here is our equation: 3x + 2y = 5
At the y-intercept (the point where the line meets y on a graph), x=0. The same can be applied to the x-intercept, as y=0. So, to find each intercept, we can treat 3x + 2y = 5, as we would with any other equation.
First, we will find the y-intercept. We know x=0, so that can be plugged in: 3(0) + 2y = 5
Anything times 0 is 0.
2y = 5
Divide both sides by 2 to isolate y:
y = 5/2 (or 2.5)
The y intercept is 5/2 (or 2.5).
Now, do the same for x, given that y=0: 3x + 2(0) = 5
Anything times 0 is 0.
3x = 5
Divide both sides by 3 to isolate x:
x = 5/3 (or 1.7
The x intercepts is 5/3 (or 1.7)
(You should probably use the fractional versions of the answers, but it depends on your teacher, I suppose)
Let me know if you have any questions about this! :)
I believe The answer is x=9
Answer:
about a decade since it takes time for money to have value over the years
Step-by-step explanation:
Answer:
x = 7 and x = -1
Step-by-step explanation:
First, we need to factor this quadratic.
To do this, start by finding all the factors of C.
7 x 1, -7 x -1
Now, we need to pick out the factors that add up to the b number, which is 8. That would be 7 and 1.
Now, we can use the numbers 7 and 1 to create two binomials.
( x + 7 ) ( x + 1 ) = 0
The last thing we need to do is to set those binomials to 0 and solve each of them individually.
x + 7 = 0
x = - 7
Solving the first binomial gives us our first solution, -7.
x + 1 = 0
x = -1
Solving the second one gives us our second solution, -1.
The solutions are -7 and -1.
