Answer:

Step-by-step explanation:
Given Equation:
y=? at x= 1
Putting the given value of 'x' in the equation:

At
, the value of y is 
The answer is c. i hope that helpped
ANSWER
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EXPLANATION
We want to find the slope of a line that is perpendicular to the line y = 1
The line y=1 is parallel to the x-axis.
In other words, the line y=1 is a horizontal line.
The line perpendicular to y=1 is a vertical line.
The slope of a vertical line is undefined
Answer:
X= -5 and y=20
Step-by-step explanation:
Y = 13.
Explanation
Replacing the value x with 4 in the function gives that y= 4+9
y= 13