Answer:
One solution
Step-by-step explanation:
y = 2x – 5. –8x – 4y = –20. one solution: (–2.5, 0)
The first graph is not a function because it has two values at x = 3
Definition of a function is that it is a relation that assigns exactly one value for each value in it's domain.
Answer: if you insert each x and y coordinate into the equations you will be able to figure out that option A will give you an answer of 10=16 and 1=3 which isn't correct. And so we do this for B and C until D is correct and matches with 6=6 and 3=3.
Answer:
solve for y
Step-by-step explanation:
subtract 5x from both sides
Divide each term in the equation by -2
(negative+negative=positive)
re-write in slope-intercept form , where m is the slope and b is the y-intercept
Now you know that the slope is and the y-intercept is .
Now, to graph, you just need to choose random values for x (like 0,1,2,3 or any other number) and insert into the equation to find the points, or you can just use the slope. To find the x-intercept, do the following:
make y equal to 0
Solve for x:
simplify
Subtract 5 from both sides
Multiply both sides by 2
Divide both sides by 5
Flip
The x-intercept is -2.