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1 answer:
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<h2>Answer:</h2>
A function from a set
to a set
is a relation that assigns to each element
in the set
exactly one element
in the set
. The set
is the domain (also called the set of inputs) of the function and the set
contains the range (also called the set of outputs).
- First figure is not a function because the x-coordinate 2 has more than one element in the set of outputs.
- Second figure is a function because this each element
in the set
is assigned to exactly one element
in the set
.
- Third figure is not a function because the x-coordinates -1, 1 and 2 have assigned more than one element in the set of outputs.
- Fourth figure is a function because this each element
Answer:
Step-by-step explanation:
4x -10y= 40
Let's rewrite this equation in the slope-intercept form (y= mx +c) so that we can obtain it's slope.
10y= 4x -40
Divide both side by 10:
The product of the gradients of perpendicular lines is -1.
⅖(gradient of line)= -1
Gradient of perpendicular line