Solve for x 4x−13=2x+9
1 answer:
You might be interested in
The solution of the system of equation is the intersection point of the two quadratic equations, so we need to equate both equations, that is,
So, by moving the term -3x^3+20 to the left hand side, we have
Then, in order to solve this equation, we can apply the quadratic formula
In our case, a=5, b=-3 and c=-30. So we get
which gives
By substituting these points into one of the functions, we have
and
Then, by rounding these numbers to the nearest tenth, we have the following points:
Therefore, the answer is the last option
<h2>Greetings!</h2>
<h2>Hope this helps!</h2>
Answer:
(1.5 , 0) , (-6 , 9) , (3 , -9)
Step-by-step explanation:
First, you need to find the equation of the line, which is:
y = mx + c
Where m is the gradient (or slope) and c is the y-intercept. Simply replace these values with the one given to you:
y = -2x -3
Now, simply draw this line by finding two points,
x = 0
y = -2(0) - 3
y = -3 when x = 0
When x = 3
y = -2(3) - 3
y = -9 when x = 3
Now you can use these points to plot the graph. (attacthed a screenshot of it)
Now simply find which given co-ordinates fit on the line. The points on the line are:
(1.5 , 0) , (-6 , 9) , (3 , -9)
<h2>Hope this helps!</h2>