Answer:
1.
D: (-4, 3)
R: (-2, 3)
2.
D: (0, 60)
R: (0, 400)
3.
D: (-infinity, infinity)
R: (-Infinity, 1]
4.
D: (-infinity, infinity)
R: [3, infinity)
Step-by-step explanation:
The domain is just what the smallest value is on the x axis, to the largest, as is range as well, but with the y axis instead.
X is the unknown value of the variable x. X = 4 means that that value is given to you and the value of x is 4. You are supposed to substitute x in for 4 in that equation.
Answer:
11/12
Step-by-step explanation:
15/12-4/12= 11/12
Answer:
Slope = 2/5
y-int = 1
Step-by-step explanation:
First, to find the slope of this line, just pick two random points:
(-3, 7) and (-2, 5) as an example for me.
Next, use the slope formula:
m = (y2-y1)/(x2-x1) It doesn't matter which points you want to choose as x2 and x1, just make sure that you're consistent!
m = (5 - 7)/(-2 -(-3))
m = 2/5
To find your y-int, just follow the pattern of the table so you can find what y is when x is 1.
When x is -1, y is 3
When x is 1, y is -1
The y value is going up (technically) by 2 for every x value.
Therefore, when x is 0, y is 1
So the y-int is 1
Answer:The expression can be simplified in following steps;
Step-by-step explanation:
(16+a)+15=0
16+15+a=0
31+a=0
a=-31